Method and apparatus for monitoring and controlling pressure in an inflatable device

ABSTRACT

A system includes a fluid controller coupled to an inflatable bladder and configured to add fluid to and remove fluid from the inflatable bladder, a control unit configured to provide information used by the fluid controller to adjust the pressurization of the inflatable bladder, the control unit including a user interface configured to display a plurality of indicia corresponding to a range of pressure levels in which the inflatable bladder is employed by a user, where each of the plurality of indicia is associated with a different level of pressure of the inflatable bladder, respectively. In one embodiment, the fluid controller is configured to adjust the pressurization, in response to a user input at the user interface, to a pressure level selected by the user based on a current pressure level of the inflatable bladder, the pressure level selected by the user and an operating time of the fluid controller.

RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.12/404,038, which was filed on Mar. 13, 2009, and which issued as U.S.Pat. No. 8,413,278 on Apr. 9, 2013. U.S. patent application Ser. No.12/404,038 is a continuation-in-part of U.S. patent application Ser. No.11/696,658, which was filed on Apr. 4, 2007, which issued as U.S. Pat.No. 8,162,009 on Apr. 24, 2012. U.S. patent application Ser. No.11/696,658 is a non-provisional of and claims priority under 35 U.S.C.§119(e), to provisional application Ser. Nos. 61/036,341, filed Mar. 13,2008, and 61/114,559 filed Nov. 14, 2008, and is a continuation-in-partof application Ser. No. 11/696,656, filed Apr. 4, 2007, which claimspriority under 35 U.S.C. §119(e), to provisional application Ser. Nos.60/788,988, filed Apr. 4, 2006, 60/859,325 filed Nov. 16, 2006 and60/867,738 filed Nov. 29, 2006, each of the preceding is hereinincorporated by reference in its entirety.

BACKGROUND OF INVENTION

1. Field of Invention

Embodiments of the invention relate generally to inflatable devices.More specifically, at least one embodiment relates to an apparatus andmethod for monitoring and controlling the pressure in an inflatabledevice, for example, based on a user selected inflation level.

2. Discussion of Related Art

Inflatable devices are used in a variety of contexts, such as wherebuoyancy or a cushioned support is needed, where space is limited orportability is desired. For example, inflatable mattresses, cushions andother body supports (e.g., pillows, backrests, chairs, etc.) are usedfor applications such as camping, hospital bedding, and both occasionaland everyday bedding and support in the home. Many inflatable devicescan be inflated to a desired pressure level using an inflation devicesuch as an electrically operated pump. Generally, these inflatabledevices also include at least one valve (either manually operated orelectrically operated) that allows control of the pressure in theinflatable valve, for example, by allowing the release of fluid from theinflatable device when the valve is open. Such inflatable devices havethe additional advantage that the degree of inflation of the inflatabledevice can be adjusted to provide selective support for objects havingan irregular shape, such as a person. Other examples of inflatabledevices include boats, rafts and other devices for use in the water.

A variety of methods are known for providing a fluid, such as air, toinflate an inflatable device. Typically, a pump is used to supply fluidto an orifice in the inflatable device. In most instances, fluid isintroduced into inflatable devices through an inlet that may be sealedto retain fluid within the inflatable device. The inlet may also serveas an outlet for deflating the inflatable device. A pump for use with aninflatable device may include a motor that drives an impeller, movingthe fluid into, out of (or both), the inflatable device. Motorized pumpsmay be powered by electricity. Typically, such electricity is providedby a connection to standard house current or, where portability isdesired, batteries.

One known inflatable device invented by the applicant is disclosed inU.S. Pat. No. 5,267,363, which is herein incorporated by reference. Theinflatable device includes a bladder 20, which is adapted for use as amattress. The inflatable device also includes a fluid controller 80connected to bladder 20 comprising a pump adapted to inflate the bladder20 when connected to household electric current.

Some inflatable devices include a pressure control system that allows auser to select the pressure level in the inflatable device based on anumber that appears to correspond with a discrete pressure level. Thatis, the system may provide the user with multiple pressure settingswhere one or more of the pressure settings corresponds to an associatednumber or other indicia identifying that pressure setting. Further, oncethe pressure setting is selected, the pressure control system adjuststhe pressure in the inflatable device by either operating the inflationdevice (i.e., to increase the pressure by adding fluid to the inflatabledevice) or opening the valve (i.e., to decrease the pressure by allowingfluid to be released from the inflatable device).

However, these known pressure control systems require that the userrecall their preferred setting whenever they use the inflatable deviceafter the pressure level in the inflatable device has been changed, forexample, as the result of the use of the inflatable device by anotheruser, gradual leakage, deflation for storage, etc. Provided the userrecalls their preferred setting, the user must then adjust the pressurecontrol setting to select the setting associated with the pressure thatthey prefer from among, perhaps, many pressure settings. Further, theassociation of the pressure of the inflatable device and the pressuresetting of the pressure control is arbitrary. As one example, thecontrols may provide unequal steps of pressure adjustment between eachcontrol setting. More specifically, where the pressure control systemprovides the user with 20 different pressure control settings (e.g.,identified by the numerals 1-20) the change in pressure between adjacentsettings (e.g., the settings 5 and 6) may differ between each step ofadjustment. In addition, the user cannot be sure that there is anydifference between the pressure provided by a first pressure controlsetting and a pressure provided by a second pressure control setting,e.g., the pressure provided when the system is set at the pressurecontrol setting ‘5’ may be exactly the same as, or differ little from,the pressure provided when the system is set at the pressure controlsetting ‘6.’

Also, existing pressure control systems may not provide fast enoughadjustment, in particular, where the inflatable device has a relativelylarge volume (e.g., a mattress). The lack of relatively rapid adjustmentmakes current pressure control systems impractical for use in inflatabledevices that provide posture control.

SUMMARY OF INVENTION

Various embodiments of the invention provide a control device thatallows a user the ability to adjust the firmness level and/or posturesetting of an inflatable device based on the tactile feedback that theuser receives when employing the inflatable device. In some embodiments,the control device includes a plurality of control elements and allowsthe user to operate the control elements to achieve a preferred firmnesslevel and/or posture setting without the need for any indicia.

In one aspect, the invention provides a method for a user to adjust apressure in an inflatable device. The method includes acts of adjustingthe pressure in the inflatable device with a control device to apressure preferred by the user, where the pressure preferred by the userhas a first value, and establishing a first setting corresponding to thepressure preferred by the user with the control device, andautomatically establishing a second setting corresponding to a secondpressure having a second value once the first setting is established,where the second value differs from the first value by a predeterminedamount. In one embodiment, the pressure preferred by the user isselected based only on the user interacting with the inflatable device.

According to another aspect of the invention, a system is adapted tocontrol a pressure in an inflatable device. The system includes apressure controller fluidly coupled to the inflatable device andconfigured to adjust the pressure in the inflatable device by adding andremoving fluid from the inflatable device. A control device includes aplurality of control elements and is adapted to allow the user to adjustthe pressure in the inflatable device using the pressure controller anda first control element configured to establish a setting correspondingto a first pressure which is a preferred pressure. A microcontrollerconfigured to receive information concerning the first setting andautomatically establish at least one additional setting corresponding toa second pressure, once the first setting is established. In a furtherembodiment, the control device is configured to allow the user todetermine the preferred pressure based only on the user interacting withthe inflatable device.

In an alternate embodiment, the control device includes a single controlelement and is adapted to allow the user to adjust the pressure in theinflatable device using the pressure controller. Further the singlecontrol element may be configured to establish a setting correspondingto the first pressure and one or more additional settings correspondingto one or more different pressures.

According to yet another aspect of the invention, a system is adapted tocontrol a pressure in at least one inflatable bladder of a multi-bladdercomfort device including a comfort layer and a support layer. Theinflation system includes a pressure controller configured to provideposture control by adding and releasing air from at least the supportlayer of the inflatable device. In another embodiment, the inflationsystem includes a pressure controller configured to provide posturecontrol by adding and releasing air from at least the comfort layer ofthe inflatable device. In a further embodiment, the inflation systemincludes a pressure controller configured to provide posture control byadding and releasing air from both the support layer and the comfortlayer of the inflatable device. In each of the preceding embodiments,the system also includes a first inflatable bladder fluidly coupled tothe pressure controller, a second inflatable bladder fluidly coupled tothe pressure controller and a control unit remote from the pressurecontroller which is adapted to allow a user to establish a plurality ofposture control settings. In another embodiment, the control unit isfurther configured to allow the user to select a posture control settingbased only on the user interacting with the inflatable comfort device.

According to a further aspect of the invention, a hand held controldevice is adapted to control a pressure in an inflatable device. Thecontrol device includes a first control element adapted to allow a user,in a first operation, to establish a first setting corresponding to apressure preferred by the user, and in a second operation, to allow theuser to adjust the pressure in the inflatable device to the pressurepreferred by the user from another pressure. The hand held controldevice also includes a second control element adapted to allow a user toincrease the pressure in the inflatable device from the pressurepreferred by the user to a pressure corresponding to a second settingwhich is automatically established once the first setting isestablished. According to one embodiment, the hand held control deviceincludes a third control element adapted to allow the user to decreasethe pressure in the inflatable device from the pressure preferred by theuser to a pressure corresponding to a third setting which isautomatically established once the first setting is established.

According to a still further aspect of the invention, an apparatus isprovided for storing a handheld control device for controlling aninflation level of an inflatable device. According to one embodiment,the apparatus includes a receiving member configured to receive thehandheld control device and allow the use to remove the handheld controldevice from the receiving member when the user is employing the handheldcontrol device. In a further embodiment, the apparatus is configured tolocate the handheld control device with respect to the inflatable deviceto be within reach of a user employing the handheld control device whenthe handheld control device is received by the receiving member. In astill further embodiment, the apparatus is configured to locate thehandheld control device with respect to the inflatable device to bewithin reach of a user while the user is reclined on an inflatabledevice without the user adjusting from a reclined posture and withoutthe user removing the control device from the receiving member. In yetanother embodiment, the apparatus is configured to locate the handheldcontrol device with respect to the inflatable device to be within reachof a user while the user remains reclined on an inflatable devicewithout the user adjusting a posture setting of the inflatable deviceand without the user removing the control device from the receivingmember.

In another aspect, an apparatus is provided for storing a handheldcontrol device for controlling an inflation level of an inflatabledevice. In one embodiment, the apparatus includes a receiving memberconfigured to receive the handheld control device and allow the user toremove the handheld control device from the receiving member when theuser is employing the handheld control device, and recharging circuitryconfigured to recharge a power source located in the handheld controldevice with the handheld control device received by the receivingmember.

In a further aspect, a system is provided for controlling apressurization of an inflatable bladder. According to one embodiment,the system includes a fluid controller coupled to the inflatable bladderand configured to add fluid to and remove fluid from the inflatablebladder, a control unit configured to provide information used by thefluid controller to adjust the pressurization of the inflatable bladder,the control unit including a user interface configured to constantlydisplay a plurality of indicia corresponding to a range of pressurelevels in which the inflatable bladder is employed by a user, where eachof the plurality of indicia is associated with a different level ofpressure of the inflatable bladder, respectively. In a furtherembodiment, the fluid controller is configured to adjust thepressurization, in response to a user input at the user interface, to apressure level selected by the user based on a current pressure level ofthe inflatable bladder, the pressure level selected by the user and anoperating time of the fluid controller. In a still further embodiment, afirst indicia included in the plurality of indicia is associated withthe current pressure level and a second indicia included in theplurality of indicia is associated with the pressure level selected bythe user. According to another embodiment, the system is configured toadjust the pressurization without employing a pressure sensing device.

In another aspect, a method of employing a user interface to adjust apressurization of an inflatable bladder using a fluid controllerincludes: constantly displaying in the user interface a plurality ofindicia corresponding to a range of pressure levels in which theinflatable bladder is employed by a user, where each of the plurality ofindicia is associated with a level of pressure of the inflatablebladder, respectively, adjusting the pressurization, in response to auser input at the user interface, to a pressure level selected by theuser based on a current pressure level of the inflatable bladder, thepressure level selected by the user and an operating time of the fluidcontroller, and associating a first indicia included in the plurality ofindicia with the current pressure level and a second indicia included inthe plurality of indicia with the pressure level selected by the user.

BRIEF DESCRIPTION OF DRAWINGS

The accompanying drawings, are not intended to be drawn to scale. In thedrawings, each identical or nearly identical component that isillustrated in various figures is represented by a like numeral. Forpurposes of clarity, not every component may be labeled in everydrawing. In the drawings:

FIG. 1 illustrates a system for monitoring and controlling pressure inan inflatable device in accordance with an embodiment of the invention;

FIG. 2 illustrates a system for monitoring and controlling pressure in amulti-chamber inflatable device in accordance with an embodiment of theinvention;

FIG. 3 illustrates a plan view of the system and inflatable device ofFIG. 2;

FIG. 4 illustrates a cross-section of the pressure controller in FIG. 3in accordance with an embodiment of the invention;

FIG. 5 illustrates a partial view of the cross-section of FIG. 4;

FIGS. 6A-6C illustrate a control device according to an embodiment ofthe invention;

FIG. 7 illustrates a user interface according to an embodiment of theinvention;

FIG. 8 illustrates a control device in accordance with anotherembodiment of the invention;

FIG. 9 is a block diagram of a system for monitoring and controllingpressure in an inflatable device in accordance with an embodiment of theinvention;

FIG. 10 is a schematic diagram of a transformer and rectifier accordingto an embodiment of the invention;

FIG. 11 is a schematic diagram of voltage regulation modules inaccordance with an embodiment of the invention;

FIGS. 12A-12C are schematic diagrams of sensing circuitry in accordancewith an embodiment of the invention;

FIG. 13 is a schematic diagram of a valve controller in accordance withan embodiment of the invention;

FIGS. 14A and 14B are schematic diagrams of control devices inaccordance with an embodiment of the invention;

FIG. 14C illustrates a processor in accordance with an embodiment of theinvention;

FIG. 14D is a schematic of a pump control circuit in accordance with anembodiment of the invention;

FIGS. 15A and 15B are flow diagrams of a process for monitoring andcontrolling the pressure in an inflatable device in accordance with anembodiment of the invention;

FIG. 16 illustrates a multi-layer inflatable device in accordance withan embodiment of the invention;

FIGS. 17A-17D illustrate inflatable devices in accordance withembodiments of the invention;

FIG. 18 illustrates a pressure controller in accordance with oneembodiment of the invention;

FIG. 19 illustrates a pressure controller in accordance with anotherembodiment of the invention;

FIG. 20 illustrates a pressure controller in accordance with yet anotherembodiment of the invention;

FIGS. 21A-21C illustrate a valve in accordance with an embodiment of theinvention;

FIG. 22 illustrates a control device in accordance with anotherembodiment of the invention;

FIG. 23A illustrates a mattress in accordance with one embodiment of theinvention;

FIG. 23B illustrates a mattress in accordance with another embodiment ofthe invention;

FIG. 24A illustrates an apparatus for storing a control device accordingto an embodiment of the invention;

FIG. 24B illustrates another view of the apparatus of FIG. 24A inaccordance with one embodiment;

FIG. 25A illustrates the apparatus of FIG. 24A employed with aninflatable device in accordance with one embodiment;

FIG. 25B illustrates another view of the apparatus of FIG. 24A employedwith an inflatable device in accordance with one embodiment;

FIG. 26A illustrates a control device and receiving member in accordancewith one embodiment;

FIG. 26B illustrates the receiving member of FIG. 26A;

FIG. 27 illustrates a schematic view of a control device according toone embodiment;

FIG. 28A illustrates a control device according to a further embodiment;

FIG. 28 B illustrates a cross-sectional view of the control device ofFIG. 28 A along line 28B;

FIG. 29 illustrates an inflatable device in accordance with anotherembodiment;

FIGS. 30A and 30B illustrate a pressure controller in accordance withanother embodiment;

FIG. 31 illustrates a valve in accordance with a further embodiment;

FIGS. 32A-C illustrate an inflatable device in accordance with yetanother embodiment; and

FIGS. 33A-B illustrate a state diagram concerning operation of a systemfor controlling a pressure level of an inflatable device in accordancewith one embodiment.

DETAILED DESCRIPTION

This invention is not limited in its application to the details ofconstruction and the arrangement of components set forth in thefollowing description or illustrated in the drawings. The invention iscapable of other embodiments and of being practiced or of being carriedout in various ways. Also, the phraseology and terminology used hereinis for the purpose of description and should not be regarded aslimiting. The use of “including,” “comprising,” or “having,”“containing”, “involving”, and variations thereof herein, is meant toencompass the items listed thereafter and equivalents thereof as well asadditional items.

As used herein, a pressure controller (e.g., a fluid controller) is adevice capable of regulating the pressure in an inflatable device andmay include various components, such as a housing, one or more valves,one or more fluid conduits, one or more pumps, one or more pressuresensors and the like. In one embodiment, an inflatable device includes asubstantially fluid impermeable bladder and a pressure controllercomprising an electrically powered pump at least partly positionedwithin the bladder. As used herein, an object, such as a pressurecontroller, that is “positioned within” a bladder occupies a portion ofthe volume that would normally be occupied by the bladder, but need notbe within the wall of the bladder. For example, a pressure controllercould be located within a recess in the wall of a bladder and be“positioned within” the bladder, as this term is defined and usedherein.

According to one embodiment, a pressure in an inflatable device ismonitored and controlled using a pressure control system that includes acontrol unit and a pressure controller that may include one or morepressure sensors, one or more valves, one or more pumps, one or morevalve operators, control logic and one or more temperature sensors. Inone embodiment, the control unit is a hand held control unit that allowsthe user to select a preferred pressure for at least one chamber of theinflatable device based on the user interacting with the inflatabledevice, e.g., based on the user's tactile senses, in some cases basedonly on the user interacting with the inflatable device. In someembodiments, the user selects the preferred pressure without anyquantitative knowledge of the actual pressure of the inflatable deviceor any knowledge of the relative pressure of the inflatable device. Thatis, without reference to any other pressure settings provided by thecontrol unit.

In one embodiment, the inflatable device includes an inflatable bladderthat can be filled with a fluid. In a version of this embodiment, theinflatable bladder includes a plurality of chambers. In a furtherversion, the inflatable bladder includes at least one a support layerthat may support one or more comfort layers.

In general, the user controls the firmness of the inflatable device byadjusting the pressure within the inflatable device using the hand heldcontrol device. In one embodiment, the system includes a processor thatcompares a desired pressure level to an actual pressure level of theinflatable device. If the desired pressure level is greater than theactual pressure level, the valve is opened and the pump is operated toadd fluid to the inflatable device until the desired pressure isreached. If the user requests a pressure level that is less than theactual pressure level the valve is opened while the pump remains off torelease fluid from the inflatable device. In some embodiments, a morerapid decrease in pressure can be achieved by operating the pump (withvalve open) in a direction that allows withdrawal of air from theinflatable device. The pressure sensors are employed to determine thepressure within the inflatable device while the temperature sensors areemployed to compensate the sensed-pressure for ambient temperature. Theposition sensors may also be used to determine the status of the valve,e.g., whether the valve is in an open position or a closed position. Inone embodiment, the valve and the pump motor are both electricallyoperated. In a version of this embodiment, a valve operator iselectrically controlled to open the valve.

FIG. 1 illustrates an embodiment of a system 100 for monitoring andcontrolling the pressure of an inflatable device 102. According to oneembodiment, the system 100 includes a control device 104, a pressurecontroller 106, and a pump 108 that can be used to control the pressurein a chamber 110 of the inflatable device 102. In one embodiment, theinflatable device 102 is a mattress. In a version of this embodiment,the inflatable device 102 includes a plurality of chambers 110.

In accordance with one embodiment, the control device is a handheld unitthat operates wirelessly to transmit control settings to the pressurecontroller 106. In another embodiment, the control device 104 isconfigured to be connected to the pressure controller 106. In a versionof this embodiment, the control device 104 is connected to the pressurecontroller 106 by an optional tether 114 that includes one or moreelectrical conductors which conduct signals from the control device 104to the pressure controller 106. The optional tether 114 is shown inphantom in FIG. 1.

The pump 108 can be included in the pressure controller 106 where thepump may be directly coupled to the controller. In the embodiment shownin FIG. 1, however, the pump 108 is located separately from the pressurecontroller 106 and the pump 108 and the controller 106 are fluidlyconnected by a conduit 112. In a version of this embodiment, both thecontroller 106 and the pump 108 are located within the profile of theinflatable device 102, for example, within a profile of a mattress. Inone embodiment, both the controller and the pump are located within aprofile of the chamber 110. In other embodiments, both the controller106 and the pump may be located outside the profile of the inflatabledevice 102. It should be recognized that the chamber 110 may be aninflatable bladder, or a plurality of inflatable bladders.

As is discussed in greater detail herein, according to one embodiment,the pressure controller 106 includes a valve and a corresponding valvehousing. In another embodiment, the controller 106 includes a pluralityof valves. In further embodiments, the pressure controller 106 mayinclude one or more valve operators, one or more position sensors tosense a position of the valve or the valve operator, one or morepressure sensors to sense pressure in one or more chambers, one or moretemperature sensors to sense temperature in one or more chambers, andelectronic circuitry.

In general, the pressure controller 106 includes electronic circuitry toprocess information concerning the pressure of the inflatable device andto provide outputs to operate valves and pumps included in the system100 to adjust the pressure. In some embodiments, the pressure controller106 may be an integral unit that includes the electronic circuitry, avalve, a pressure sensor, a temperature sensor, a valve operator, aposition sensor or any combination of the electronic circuitry and thepreceding devices. Further, in one embodiment, the pressure controller106 includes an integral pump (e.g., the pump 108).

The control device 104 may be stored proximate to the inflatable device102 to provide a user with convenient access to the control device. Inone embodiment, the inflatable device 102 includes a frame (e.g., amattress frame) that includes a storage location for the control device104 such as a recess, a cutout or a hook. In another embodiment, thecontrol device is stored on an adjacent pedestal to locate the controldevice in an elevated position relative to the inflatable device 102.

In various embodiments, the system 100 may also be employed to add fluidto one or more accessory devices, for example, a pillow including afluid impermeable bladder. A fluid coupling may be provided for thepurpose of temporarily connecting the accessory device to the pump 108.According to various embodiments, the fluid coupling may be connected toone of the conduit 112 or the pressure controller 106.

Referring to FIG. 2, according to one embodiment, the inflatable device202 includes a plurality of chambers 210A, 210B where each of thechambers is an inflatable bladder. The pressure controller 206 isfluidly connected to each of the plurality of chambers 210A, 210B. Thepump 208 is fluidly connected to the pressure controller (andconsequently each chamber 210A, 210B) by the conduit 212. Thus, thepressure controller 206 can be employed to monitor and control thepressure in the inflatable device 202, that is, to monitor and controlthe pressure in each chamber 210A, 210B of the inflatable device.

FIG. 3 illustrates a plan view of the inflatable device 202 of FIG. 2.According to one embodiment, the inflatable device 202 is a mattresssuitable for sleeping two users. In one embodiment, the pressurecontroller 206 is located at one end of the inflatable device 202, forexample, a foot of the inflatable device 202. FIG. 3 illustrates a firstvalve 216A that fluidly couples the pressure controller 206 to the firstchamber 210A, and a second valve 216B that fluidly couples the pressurecontroller to the second chamber 210B.

The pressure controller 206 can include a first pressure sensor 218A tomeasure the pressure in the first chamber 210A, a second pressure sensor218B to measure the pressure in the second chamber 210B, a firsttemperature sensor 221A to measure the temperature in the first chamber210A, and a second temperature sensor 221B to measure the temperature inthe second chamber 210B. In one embodiment, a fluid conduit 212 connectsthe pressure controller 206 to the pump (e.g., the pump 208). Accordingto one or more alternate embodiments, the pressure sensors (e.g., thepressure sensors 218A, 218B) and the temperature sensors (e.g., thetemperature sensors 221A, 221B) are at another location of theinflatable device 202, i.e., the pressure sensors and temperaturesensors are not located in the pressure controller 206. For example, inone embodiment, the pressure sensors may be located in a fluid conduitthat fluidly couples the pressure controller and the chamber.

FIG. 4 illustrates a cross section A-A of the pressure controller 206 ofFIG. 3. In addition to the first valve 216A, the second valve 216B, thefirst pressure sensor 218A, and the second pressure sensor 218B,according to one embodiment, the pressure controller 206 also includes avalve operator 220 shown in phantom (e.g., a motor, a solenoid, etc.), amechanical coupling 222 to connect the valve operator 220 to each valve216A, 216B, a gear 228 (e.g., a toothed gear) to connect the valveoperator 220 to the mechanical coupling 222, a first position sensor223A, a second position sensor 223B, and electronic circuitry 226. Inone embodiment, the pressure controller 206 includes a housing 254. In aversion of this embodiment, the mechanical coupling 222, the valveoperator 220, the gear 228, and the electronic circuitry 226 areincluded in the housing 254.

The valve operator 220 may be any device that provides a mechanicalmotion in response to the receipt of an electronic/electrical signalwhere the mechanical motion can be used to open and/or close a valve.Thus, the valve operator 220 may be a motor, a solenoid, a relay and thelike. Embodiments of the valve operator 220 may be electrical orelectronic devices that are controlled by analog circuitry, digitalcircuitry or a combination of analog and digital circuitry.

According to one embodiment, the mechanical coupling is a rod thatincludes a serrated surface 230 configured to engage the gear 228, afirst engagement surface 232A to engage the first valve 216A, and asecond engagement surface 232B to engage the second valve 216B. In oneembodiment, each valve 216A, 216B includes a diaphragm (234A, 234B,respectively), an overseal (236A, 236B, respectively), a contact surface(contact surface 238A, 238B, respectively) and a valve housing (240A,240B, respectively).

In operation, the valve operator 220 operates in response to a signalindicating that a change in pressure is desired, for example, the userhas requested a change in pressure in one of the chambers 210A, 210B. Ingeneral, the motion of the valve operator 220 is transferred to themechanical coupling 222 (e.g., a plunger) which is displaced such thatthe engagement surface (e.g., 232B) of the mechanical coupling engagesthe contact surface (e.g., 238A) of the valve associated with theselected chamber. Thus, the valve is operated to provide for anadjustment of the pressure in the selected chamber. To decrease thepressure in the chamber the valve is opened and the pump remains off(or, operates to forcibly withdraw air from the chamber) so that fluidexhausts from the chamber (e.g., the chamber 210A) via the valve (e.g.,the valve 216A). Conversely, to increase the pressure in the chamber thevalve is opened and the pump is turned on to move fluid (e.g., air) intothe chamber via the valve.

According to one embodiment, the fluid exhausts from the chamber intothe pressure controller 206 where it may be released to atmosphere. Inone embodiment, the fluid is released to atmosphere via the pump 208,for example, when the pump is off.

Referring now to FIG. 5, a more detailed view of the portion of thepressure controller 206 including the valve 216B is shown. In oneembodiment, the chamber 210B includes an opening 242B that allows thepressure controller 206 to be fluidly coupled to the chamber 210B viathe valve 216B. In a version of this embodiment, the fluid path betweenthe pressure controller 206 and the chamber 210B includes a neck 244B.According to one embodiment, a first flange 246B is located at a firstend of the neck 244 proximate to the opening 242, and a second flange248B located at a second end of the neck 244 that engages the valvehousing 240. In a version of this embodiment, the first flange 246B isRF welded to an outer surface of the chamber 210B. In one embodiment,the valve 216B includes at least one seal 250B that provides afluid-tight seal between the valve housing 240 and the second flange248B. In a further embodiment, the valve 216B includes a second seal252B that provides a fluid tight seal between the valve housing 240B andthe housing 254 of the pressure controller 206.

The pressure controller 206 of FIG. 5 is shown with the mechanicalcoupling 222 in three positions. First, the mechanical coupling 222 isshown in a neutral position where the engagement surface 232B of themechanical coupling 222 and the contact surface 238B of the valve 216Bare proximate one another but the mechanical coupling 222 is notapplying any pressure to open to the valve. With the mechanical coupling222 in the neutral position, the engagement surface 232A of themechanical coupling 222 and the contact surface 238A of the valve 216Aare also proximate one another. In addition, with the mechanicalcoupling 222 in the neutral position, the overseals 236A, 236B areengaged with the corresponding valve housing 240A, 240B, respectively.As a result, the pressure in the chambers 210A, 210B remains unchangedwhen the mechanical coupling 222 is in the neutral position. Second, themechanical coupling 222 is shown in phantom in a second position wherethe mechanical coupling has moved laterally to the right as a result ofthe operation of the valve operator 220. As a result, the engagementsurface 232B is moved into contact with the contact surface 238B todisengage the overseal 236B from the valve housing 240B to allow for anadjustment of the pressure in the chamber 210B. In addition, with themechanical coupling 222 in the second position, the engagement surface232A of the mechanical coupling 222 and the contact surface 238A of thevalve 216A are no longer proximate.

In general, the valve 216A has the same overall structure as describedabove for the valve 216B. Therefore, in a third position, with themechanical coupling 222 shifted laterally to the left (as shown inphantom), the engagement surface 232A is moved into contact with thecontact surface 238A to disengage the overseal 236A from the valvehousing 240A and allow for an adjustment of the pressure in the chamber210A.

It can be seen from the preceding that, in at least one embodiment, thevalve operator 220 operates both valves 216A, 216B. In addition,however, it should be appreciated that the valve operator 220 and themechanical coupling 222 can be employed to provide a range of motionthat can be applied to operate the valves 216A, 216B. That is, the valveoperator 220 may be employed to operate the valves 216A, 216B in one ormore positions between a fully opened position and a fully closedposition. For example, in one embodiment, the valve operator 220 is amotor (e.g., a stepper motor) that provides a rotational motion to thegear 228 that is transferred to a linear motion of the mechanicalcoupling 222. In this embodiment, the rotational motion may beincrementally controlled so that the corresponding linear motion of themechanical coupling 222 is also incrementally controlled. As a result,at a first stage of operation, the mechanical coupling travels a firstdistance that is sufficient to open the overseal (e.g., the overseal236B) of the valve (e.g., the valve 216B) while the diaphragm (e.g., thediaphragm 234B) remains closed. At a second stage of operation,following additional rotation (e.g., clockwise rotation) of the valveoperator 220, the mechanical coupling 222 travels a second distance thatis sufficient to open the diaphragm (e.g., the diaphragm 234B) with theoverseal (e.g., the overseal 236B) remaining open.

According to one embodiment, the first stage of operation is employed incombination with the operation of the pump 208 that is turned on toinflate the chamber (e.g., the chamber 210B). That is, the fluidpressure provided by the pump 208 forces the diaphragm to open inwardinto the chamber to allow the chamber to inflate. In a version of thisembodiment, the pump 208 remains off in the second stage of operationand the chamber (e.g., the chamber 210B) deflates when the diaphragm isopened by the mechanical coupling 222.

As is discussed in greater detail below, the position sensors 223A, 223Bmay be employed to monitor the position of the mechanical coupling 222and provide signals to the electronic circuitry 226 indicative of thestage of operation of the valves 216A, 216B.

The above embodiments may employ a variety of valve operators 220 toproduce an incrementally controlled motion of each valve. For example, asolenoid-type valve operator may be employed where the motion of theplunger is controlled incrementally through a plurality of positionsincluding a fully open position wherein the overseal and the diaphragmof a valve are open.

It is to be appreciated that one or both of the gear 228 and themechanical coupling 222 need not be used with the pressure controller206. Instead, in various embodiments, the valve operator 220 is directlyconnected to one or more valves so that the motion of the valve operator220 is transmitted directly to one or more valves operated by thepressure controller 206 without the aid of any intermediate mechanicaldevices. In addition, a plurality of valve operators may be used withthe pressure controller 206, for example, where each valve operatoroperates a single valve.

According to one embodiment, the operation of the valve operator 220 iscontrolled with the electronic circuitry 226. The electronic circuitry226 can include analog circuits, digital circuits or a combination ofanalog and digital circuits. The electronic circuitry may includehardware, software, firmware or a combination of the preceding. Theelectronic circuitry 226 may, for example, include a processor such as amicrocontroller and memory and/or other components that provide logicand other apparatus for storing and executing instructions concerningthe operation of the pressure controller 206. The electronic circuitry226 or elements of the electronic circuitry can be included on a printedcircuit (“PC”) board or a plurality of PC boards.

In various embodiments, the electronic circuitry 226 is connected to oneor more of the devices included in the pressure controller 206. Forexample, one or more of the valve operator 220, the position sensors223A, 223B, the pressure sensors 218A, 218B, and the temperature sensors221A, 221B can be connected to the electronic circuitry 226. Accordingto one embodiment, the pressure sensors 218A, 218B are integral toseparate PC boards located within the pressure controller 206.

It is to be recognized that the electronic circuitry 226 may includecommunication circuitry employed to facilitate communication between thepressure controller 206 and the control device 104. For example, theelectronic circuitry 226 may include a receiver to receive signals fromthe control device 104. In other embodiments, the electronic circuitry226 may include a transceiver to allow for bi-directional communicationbetween the control device 104 and the pressure controller 206. In oneembodiment, the control device 104 is hardwire connected with theelectronic circuitry 226. According to another embodiment, wirelesscommunication occurs between the control device 104 and the pressurecontroller 206 and the electronic circuitry 226 includes a wirelesstransceiver.

As mentioned above, the control device 104 may be remote from theinflatable device 202. The control device 104 communicates informationto the pressure controller 206 concerning the pressure and/or posturedesired by the user for the inflatable device 202. According to oneembodiment, the control device 104 is sized and adapted to be a handheld control device. In a version of this embodiment, the control device104 is a wireless control device.

An embodiment of the control device is illustrated in FIGS. 6A-6C. Thecontrol device 104 includes a housing 660, a user interface 661, a powersource 664 (e.g., a 9 volt battery), and electronic circuitry 663.According to one embodiment, the user interface 661 includes a pluralityof control elements 662, a selector 664, and one or more indicatinglights 665. In a version of this embodiment, the selector 664 allows theuser to choose the chamber (e.g., the chambers 210A, 210B) whosepressure is to be adjusted from among a plurality of chambers includedin the inflatable device. The control elements 662 can be employed bythe user to set the pressure in the selected chamber of the inflatabledevice 202.

According to one embodiment, the housing 660 includes a tapered section667 and a concave section 668. Further, the housing 660 may be sized andadapted to conform to a hand of the user. In various embodiments, thecontrol device is sized and adapted to be a hand held control device.According to one embodiment the control device has a maximum diameter of2.5 inches. In a version of this embodiment, the control device has adiameter of 2.4 inches.

In one embodiment, the user interface 661 is a touch screen with adisplay that is responsive to a user locating their fingertip in thevicinity of a selected control element displayed in the interface. Inanother embodiment, where the control elements 662 are discrete items,the user interface 661 is adapted to provide a substantially solidsurface that includes one or more openings through which the pluralityof control elements located beneath the surface may extend for access bythe user. For example, referring to FIG. 6B, the control elements 662A,662B, and 662C may be raised above a surface 666 of the user interface661. In yet another embodiment, the user interface 661 provides asubstantially solid surface that is flexible and may flex in response topressure applied by the user in the direction of the interior of thehousing. In this embodiment, the surface 666 of the user interface 661includes an indication of the location of each control element. In aversion of this embodiment, the user selects a control element fromamong the plurality of control elements 662 by applying pressure on thesurface in the vicinity of control element, e.g., control element 662A.

According to one embodiment, the user interface 661 includes a firstcontrol element 662A that is employed by the user to establish a controlsetting associated with a preferred pressure setting of the inflatabledevice, a second control element 662B to increase the pressure in theinflatable device, a third control element 662C to decrease the pressurein the inflatable device, a fourth control element 662D to decrease thepressure in the inflatable device to one or more established pressures,and a fifth control element 662E to increase the pressure in theinflatable device to one or more established pressures. In oneembodiment, the control elements 662D and 662E provide fixed incrementsof pressure adjustment.

In one embodiment, the first control element 662A is located in acentral location in the user interface 661 and the indicating lights665A, 665B are located radially outward from the first control element662A at approximately 12 o'clock, using a clock face as a positionalreference. Applying the same reference, the second control element 662Bis located at approximately 12 o'clock on the user interface radiallyinward relative to the indicating lights, the third control element 662Cis located at approximately 6 o'clock on the user interface, the fourthcontrol element 662D is located at approximately 9 o'clock on the userinterface, and the fifth control element 662E is located atapproximately 3 o'clock on the user interface 661. In a version of thisembodiment where the control device 604 is employed to set the pressurein a plurality of chambers of the inflatable device, the selector 664 islocated at approximately 6 o'clock radially outward of the third controlelement 662C.

According to one embodiment, the control elements 662 are located withinthe user interface 661 to provide the user with a known, repeatable, andeasy to use approach to controlling the pressure in the inflatabledevice. As will be recognized by those of ordinary skill in the art,however, the control elements 662 can be located in the user interface661 in any of a variety of locations and in a variety of mannersincluding locations that provide a different spatial relationshipbetween the plurality of control elements 662.

In various embodiments, the control device 604 provides the user with aconvenient and easy to use approach to set a preferred pressure settingand return to it. In one embodiment, the user selects the first controlelement 662A once, for example, by pressing and holding the controlelement to establish a preferred pressure setting corresponding to apreferred pressure for the inflatable device. Once the preferredpressure is initially established, the user may later select (e.g.,momentarily select) the first control element 662A to return to thepreferred pressure from any other pressure. For example, the user canreturn to the preferred pressure after the inflatable device has beenused by another user who has adjusted the pressure.

According to one embodiment, the second control element 662B and thethird control element 662C allow the user to adjust the pressure in theinflatable device 202 within a continuous range of control. For example,the pressure adjustment provided by the second control and thirdelements may allow the user to raise and lower the pressure between 0psi (completely deflated) and an established maximum pressure for theinflatable device 202. In other words, the system does not require thatthe user adjust the pressure in the inflatable device in fixedincrements or steps.

In various embodiments, the system also provides the user with anability to easily establish a control setting corresponding to thepressure that they prefer. More specifically, the control device 604allows the user to establish the control setting without any knowledgeof the quantitative pressure level and without reference to any otherpressure levels. For example, while the user employs the inflatabledevice 202 (e.g., lies on an inflatable mattress) he or she can adjustthe pressure in the inflatable device using the second, third, fourthand/or fifth control elements. When the adjustment is complete and theuser determines that the inflation is at a level that they desire, theymay simply select the first control element for a previously establishedminimum amount of time (e.g., press and hold) to establish a controlsetting corresponding to the then current pressure level. The controlsetting is stored in memory either in the control device or the pressurecontroller. The user can later re-establish the desired pressure in theinflatable device by momentarily selecting the first control element.Once selected, the control setting is provided to the pressurecontroller (e.g., the pressure controller 206) and the desired pressureis re-established in the inflatable device (or in the selected chamber,where the inflatable device includes a plurality of chambers).

In some embodiments, the control device 604 provides an interface thatallows the user to adjust the pressure level in the inflatable deviceusing an approach that is clear even where the user interface does notinclude indicia. In one embodiment, the control elements do not includeany indicia, for example, the control elements are unmarked. That is, asdescribed above, the user's tactile sensation concerning the inflatabledevice may be the only information that is required for the user toestablish the control setting corresponding to their desired pressure.For example, the control device 604 may, but need not, include anindication of the pressure, for example, a pressure gauge that displaysthe pressure in the inflatable device or an indication of the pressurerelative to a reference pressure (e.g., a pressure scale from 1-10). Ina further embodiment, the locations of the control elements are markedbut the control elements are otherwise unlabeled.

Further, embodiments of the control device need not include apre-defined plurality of discrete control settings in order for the userto establish the desired pressure level and corresponding controlsetting. Thus, according to one embodiment, the control device 604 caninclude a user interface 661 with no indicia or other markings. Forexample, the control elements 662 may be directly accessible becausethey protrude through a surface of the user interface (e.g., afaceplate) or they are located beneath a transparent surface of the userinterface. In another embodiment, the control elements themselves arenot visible, but the regions of the user interface where the controlelements are located are contoured, i.e., raised or lowered relative tothe other regions of the user interface.

According to one embodiment, the second control element 662B and thethird control element 662C can be employed by the user for posturecontrol. Posture control allows a user to adjust the position of theinflatable device via the rapid increase or decrease of the pressure inthe inflatable device. For example, posture control may allow the userto adjust an inflatable device from a first configuration in which it isemployed as a mattress (e.g., it provides a substantially horizontalsurface on which the user reclines) and a second configuration in whichthe inflatable device includes a vertical backrest, for example, achair. Thus, posture control may allow the inflatable device to berapidly converted between the first configuration and the secondconfiguration.

In one or more embodiments, posture control requires the rapid movementof substantial volumes of fluid, for example air, to adjust theinflatable device between the first configuration and the secondconfiguration while the user is employing the inflatable device. Thatis, the user may desire to move from a seated position to a fullyreclined position or visa versa. Embodiments of the invention allow therapid postural control of the inflatable device, at least in part,because the pump (e.g., the pump 208) is designed to rapidly move largevolumes of air at a relatively low pressure, for example, at less thanone PSI.

According to one embodiment, the control device also includes one ormore pressure settings corresponding to pressure settings pre-set at,for example, the time of the manufacture of the system. These pre-setpressure settings may be established because, for example, itcorresponds to a pressure in the inflatable device that is commonlyemployed by users or is a moderate pressure that is locatedapproximately in the middle of a pressure range most commonly preferredby users of the inflatable device.

According to one embodiment, the fourth control element 662D and thefifth control element 662E can provide control settings that are presetby the supplier/manufacturer of the inflatable device. In oneembodiment, the fourth control element 662D provides a factory presetfirm setting (e.g., a manufacture's setting) when it is selected onceand a factory preset extra-firm setting when it is selected twice, forexample, twice in rapid succession (i.e., with a minimal time delay). Ina version of this embodiment, the fifth control element 662E alsoprovides one or more factory preset settings, for example, a softsetting when it is selected once and a super-soft setting when it isselected twice. As will be recognized by those of skill in the art, thecontrol elements 662 may provide any number of preset control settingsfrom one setting to any of a plurality of settings.

In one embodiment, the settings provided by the fourth and fifth controlelements 662D, 662E provide settings that correspond to pressuresettings a fixed amount greater than (firm, extra-firm) or less than(soft, extra-soft) the setting established by the user with the controlelement 662A (e.g., the firm, extra-firm, soft and extra-soft settingsare relative to a “home” setting). In one embodiment, the actualpressures corresponding to the extra-firm, firm, soft and extra-softsettings are not established until the user establishes a preferredsetting using the control element 662A.

In accordance with one embodiment, a user may automatically establish aplurality of control settings (e.g., pressure settings) once a firstpressure is established. In one embodiment, the first pressure is thepressure preferred by the user. Further, the user may establish thepressure based on the preferred firmness of the inflatable device andwithout knowledge of an actual pressure value. Thus, the user may adjustthe pressure in the inflatable device to establish a suitable comfortlevel where the pressure has a first value, for example, 0.3 psi. Afirst control setting corresponding to the pressure is established bythe user with the control device 604, for example, by depressing orotherwise selecting a control element (e.g., the control element 662E).The setting may be stored in memory and may be stored as an actualpressure value or some other information (such as a number associatedwith the pressure value) that will allow the system to return thepressure in the chamber to that preferred by the user.

The system may automatically establish, a second setting thatcorresponds to a second pressure having a second value once the firstsetting is established. In accordance with one embodiment, the secondvalue has a difference from the first value by a predetermined amount,for example, 0.05 psi. The second setting may correspond to a pressurethat is either greater than or less than the pressure associated withthe first setting. Accordingly, in the preceding example the differencemay be +0.05 psi or −0.05 psi. In further embodiments, a plurality ofadditional control settings may be automatically established by thesystem once the first setting is established. For example, a thirdsetting may be automatically established with the control device 604where the third setting corresponds to a third pressure having a thirdvalue that differs from the first value by a predetermined amount. Thatis, in one embodiment, difference between the value of the firstpressure and the value of the third pressure is negative 0.05 psirelative to the first value. In the preceding embodiment, each of thedifferences in pressure values is equal, however, other embodiments mayemploy a “difference-scale” that is graduated such that the differencein values between adjacent pressure settings increases (or decreases) asthe values move away from the value of the first pressure.

In the immediately preceding example, the second value and the thirdvalue are established relative to the first value. Alternatively, aseries of control settings may be established and include controlsettings that are referenced to pressure setting in the series otherthan the first setting that is established. For example, the settingsmay be established with reference to the value of the immediatelypreceding setting in the series. In one example, a pressure differenceof 0.01 psi is established as the desired difference in the pressureassociated with adjacent control settings. Thus, if the first settingcorresponds to a pressure of 0.3 psi, the second setting may correspondto 0.31 psi, the third setting may correspond to 0.32 psi, etc. Further,as described above, control settings associated with pressures greaterthan or less than the pressure associated with the first setting may beautomatically established. Thus, referring back to the precedingexample, a fourth setting may correspond to 0.29 psi, a fifth settingmay correspond to 0.28 psi, etc.

In one or more alternate embodiments, one or more of the controlelements 662 include indicia. In another embodiment, the control deviceincludes a pressure indicator that can, for example, display thepressure in each of the chambers included in the inflatable device.

The selector 664 allows the user to choose which of the plurality ofchambers (e.g., the chambers 210A, 210B) of the inflatable device inwhich they will adjust the pressure. According to one embodiment, theselector is a switch operable between a plurality of switch positions,for example, a slide switch that can be moved to a left position or aright position to select the left chamber 210A and the right chamber210B, respectively. Any other type of electromechanical or solid stateswitch, such as a rocker switch, can also be used.

According to one embodiment, the control device 604 includes one or moreindicating lights where each indicating light 665A, 665B corresponds toa chamber of the inflatable device, e.g., chambers 210A, 210B,respectively. For example, where the left chamber is selected with theselector switch, the left indicating light is on and where the rightchamber is selected the right light is on. The indicating lights may bea LED, an incandescent lamp, or any other light source.

FIG. 22 illustrates another embodiment of a control device 2204.According to one embodiment, a surface 2250 includes a contoured,translucent flexible surface that covers the control elements 2262. Inone embodiment, the control elements provide a variety of controlfeatures that allow a user to adjust the firmness of an inflatabledevice by activating each control element in a plurality of operations.For example, one or more of the control elements can may provide adifferent operation when activated in each of the following manners: thecontrol element can provide a first operation when tapped; a secondoperation when tapped twice; a third operation when pressed and held;and a fourth operation when first being tapped, and then pressed andheld. The preceding methodology can provide an even wider variety ofoperations by employing different but similar variants. For example, adifferent operation may correspond to each of a different quantity oftaps (i.e., 3, 4, etc.) or if a different sequence of the same steps areemployed. That is, a first operation may results when a control elementis tapped, pressed and held while a second operation may result when thesame control element is pressed and held for a minimum amount of timeand is then tapped.

In one embodiment, a first selection (e.g., a tap or other activation)of a control element begins a continuous pressure adjustment either upor down until the control element is selected again. That is, thecontrol element provide an on/off feature for firmness adjustment.

According to one embodiment, the control device 2204 has two generaloperating modes: a first “factory preset” mode that allows the user toselect inflation levels that correspond to pressures/firmness that isestablished, for example, at the time of manufacture and/or at the pointof sale; and, a “custom” mode that allows the user to establish a widevariety of pressure/firmness settings that are selected based on thetactile feel of the inflatable device to the user. In one embodiment,200 different pressure/firmness settings are available.

Referring to the illustrated embodiment shown in FIG. 22, the controlelement 2262A can provide the user with an ability to: establish acustom “home” firmness to that corresponds to a pressure/firmnesspreferred by the user; return the pressure/firmness to a factory preset“medium” pressure; set a new home pressure/firmness; and initiate areference check. In one embodiment, activation of the reference checkresults in an operation of the pressure controller that adjusts thefirmness of the inflatable device to a known reference firmness (forexample, the mid-range or medium firmness selected from the factorypreset settings), holds the firmness steady at the known referencefirmness, and then automatically returns the firmness to the level thatimmediately preceded the reference check. In a version of thisembodiment, the firmness is returned to the “pre-reference check” levelafter a pre-defined period of time (e.g., 5, 8, or 10 seconds, etc.).

According to one embodiment, the control device operates in the factorypreset mode after the factory preset medium pressure is selected andoperates in the custom mode following selection of the custom “home”firmness.

The control element 2262B can provide the following functions:increasing the firmness up to a maximum provided by the pressurecontroller; storing a custom home position to memory; and providing amomentary function switch that provides a continuous increase infirmness so long as the control element remains activated (e.g.,depressed). The control element 2262C can provide the followingfunctions: decreasing the firmness to a minimum provided by the pressurecontroller; adjusting the firmness to the previous setting; providing amomentary function switch to provide a continuous decrease so long asthe control element remains activated; and controlling a light sourcethat may illuminate a region of the user interface. Similarly, thecontrol element 2262D can provide the following functions: anincremental decrease of the firmness (i.e., a step adjustment) of theinflatable device to a “semi-soft” level of firmness; an incrementaldecrease of the firmness (i.e., another step adjustment) of theinflatable device to a “soft” level of firmness; access to historicalinformation concerning past firmness settings, for example, access toprevious “home” firmness settings; and initiation of a reference check.Similarly, the control element 2262E can provide the followingfunctions: an incremental firmness increase (i.e., yet another stepadjustment) to a “semi-firm” level of firmness; an incremental firmnessincrease (i.e., still another step adjustment) to a “firm” level offirmness; access to historical information concerning past firmnesssettings; and initiation of a reference check.

In various embodiments, the control elements 2262 are elements (e.g.,buttons) that are activated when they are depressed. In one embodiment,the center of region 2254 can be depressed axially inward to activatethe control element 2262A and “rocked” in anyone of four directions toactivate the control elements 2262B, 2262C, 2262D, and 2262E,respectively.

According to one embodiment, the user interface includes a light source2252 that may illuminate the user interface or a portion thereof. Forexample, in one embodiment, the user interface includes a region 2254beneath which the control elements 2262 are located. The region orportions thereof may be transparent, translucent or otherwise configuredto transmit light generated by the light source 2252. The light sourcemay be an LED, incandescent lamp or other light source that is sized andadapted for inclusion in the hand held control device 2204.

The light source 2252 may be controlled by an electronic controller(e.g., a processor) located in the control device 2204. According to oneembodiment, an intensity of the light source 2252 is controlled. Forexample, the intensity of the light source 2252 may be periodicallyadjusted to provide a soothing effect on the user of the inflatabledevice. That is, in one embodiment, the intensity of the light source2252 is adjusted to create a beat or rhythmic variance in the intensityof the light source from a relatively lower level of intensity to arelatively higher level of intensity and back. According to oneembodiment, one or more control elements 2262 can be employed to adjustthe minimum and maximum intensity levels, a steady state intensitylevel, the beat or frequency and other operational characteristics ofthe light source 2252. In one version, the light source 2252 iscontrolled to generate a slow pulse of varying light intensity, forexample, the light source completes a cycle of varying light intensityin approximately 4 seconds.

In addition, the light source 2252 may be used to illuminate the controlelements 2262 so that the user can locate the control elementsregardless of whether they are marked and regardless of an ambient lightlevel where the control device 2204 is used. For example, where thecontrol elements 2262 are located beneath a translucent face of the userinterface, the light source may also be located beneath the translucentface. In one version, the light source is centrally located in the userinterface and may be co-located with a control element 2262, e.g.,beneath the control element 2262A.

In various embodiments, the light source 2252 may be employed to provideinformation to the user. For example, the light source 2252 maycommunicate information concerning the current firmness/pressure settingof the inflatable device. In one embodiment, the light source maintainsa continuous beat of varying intensity when the inflatable device is inthe current home position. The light source 2252 may provide feedbackconcerning a user's firmness selection. For example, the light source2252 may blink once for each tap applied to a control element by theuser. Further, the light source may change in intensity over a firstperiod (i.e., have a first beat) when the control device 2204 is in thefactory preset mode and change in intensity over a second period (i.e.,have a second beat) when the control device is in the custom mode.

FIG. 7 illustrates another embodiment of a user interface 761 for acontrol device (e.g., the control device 604). The user interface 761includes a plurality of control elements 762A, 762B, 762C, 762D, 762Eand 762F. Here, according to one embodiment, the user interface 761 doesnot include any indicia or other markings. For example, the user mayselect a first control element 762A to establish a control settingcorresponding to a preferred pressure of the inflatable device. The usermay learn of the action required to make the selection (e.g., pressing,pressing and holding, toggling between positions, simultaneouslypressing multiple control elements, etc.) at the time they first use thecontrol device 604. For example, the inflatable device may includeinstructions concerning the operation of the control device 604. Aspreviously described concerning the user interface 661, the user'sselection may be made simply by pressing or tapping the first controlelement 762A once. Regardless of the required action, however, in oneembodiment, the user may establish the control setting corresponding tothe preferred pressure setting of the inflatable device based only onthe user interacting with the inflatable device, e.g., based on theuser's tactile senses. Thus, the user selects the preferred pressurewithout any quantitative knowledge of the actual pressure of theinflatable device or any knowledge of the relative pressure of theinflatable device. For example, the user need not refer to a sequence ofpre-defined pressure settings.

It should be recognized that embodiments of the invention may provide auser with a method of establishing a control setting corresponding to a“home-pressure” that may correspond to their preferred pressure setting(e.g., by selecting the control element 762A in a first predeterminedmanner) from which further adjustment of the pressure of the inflatabledevice may be made. It will also be recognized that once the“home-pressure” is established, the user may return to it from any otherpressure by selecting the control element 762A in a second predeterminedmanner.

Further control of the pressure in the inflatable device may be providedby the control elements 762B, 762C, 762D, 762E as originally describedwith reference to the user interface 661 of FIG. 6. For example, thecontrol element 762B may be used to increase the pressure in theinflatable device and the control element 762C may be used to decreasethe pressure in the inflatable device. According to one embodiment, thecontrol elements 762B and 762C each provide a continuous range ofpressure control. In a version of this embodiment, the longer thecontrol element 762B, 762C is held the greater the correspondingincrease or decrease in pressure.

In an alternate embodiment, the control elements 762B and 762C eachprovide pressure adjustments in a plurality of discrete pressure-steps.That is, in this embodiment, the length of time for which a controlelement is selected is not determinative of the amount of the pressurechange of the inflatable device—the control element must be selected tomake a first pre-determined pressure adjustment and then de-selectedbefore a further pressure change can be made using that control element.

The control elements 762D, 762E may also be employed to increase anddecrease the pressure in the inflatable device in two or more predefinedincrements as previously described with reference to FIG. 6.

In addition, the user interface 761 includes a control element 762F thatprovides a predefined control setting corresponding to a predefinedpressure setting. In one embodiment, the predefined pressure setting andcorresponding control setting are established by the manufacturer ordistributor of the inflatable device. In a version of this embodiment,the control setting cannot be changed by the user.

Although not illustrated in FIG. 7, embodiments of the user interface761 may be employed with a multi-chamber inflatable device (e.g., theinflatable device 202). In these embodiments, the user interface 761 mayinclude a selector switch (e.g., the selector switch 664) by which theuser may select the chamber for which a pressure adjustment is desired.

It will be recognized by those of ordinary skill in the art, that thelocations of each of the plurality of control elements 662, 762 may bevaried from the embodiments depicted in FIGS. 6 and 7, and may beanywhere on the user interface. For example, the control element 762Aneed not be centrally located in the user interface 761, and forexample, may be located at 6 o'clock on the user interface 761 orsomewhere else on the user interface. The remainder of the controlelements may be similarly re-located provided that the establishedpositions of the plurality of control elements 662, 762 are known by theuser. Further, where the user interface 661, 761 includes an electronicdisplay a plurality of control elements may appear at the same locationin different screens of the display.

As mentioned above, the control device 104, 604 may employ wirelesscommunication to communicate with the pressure controller 206. As willbe recognized by those of ordinary skill in the art, other forms ofcommunication may be supported by the control device 604. Further,electronic circuitry 663 included in the control device may include areceiver or transceiver for the transmission of information to thepressure controller 206.

According to one embodiment, any of the control settings established bythe user with the control device (e.g., the control device 604) may bewirelessly-transmitted to the pressure controller 206. In general, theuser selects the pressure (for example, based on their interaction withthe inflatable device) that provides a high degree of comfort. Thus,information corresponding to the preferred pressure setting may betransmitted to the pressure controller 206. In addition, informationconcerning other requested pressure changes can also be wirelesslytransmitted. This information may be, for example, a control settingestablished by the user which corresponds to the requested pressure. Thecontrol setting may be an actual pressure value or any other controlsignal from which the desired pressure or pressure adjustment may bedetermined by the pressure controller 206. The information transmittedfrom the control device (e.g., the control device 604) is processed bythe electronic circuitry 226 of the pressure controller 206. In responseto the information, the pressure controller may operate to adjust thepressure (if necessary) of the inflatable device 202.

In further embodiments, the above information transmission may occur viaconductors (e.g., included in the tether 114) that connect the controldevice 604 to the pressure controller 206. Any of the above-describedembodiments of the user interface 661, 761 and the control device 104,604 may be employed in a wireless system or with hardwirecommunications.

Referring now to FIG. 8, yet another embodiment of a control device 804is illustrated. According to one embodiment, the control device 804includes a first control element 862A, a second control element 862B, athird control element 862C, a fourth control element 869, a fifthcontrol element 870 and a tether 871. In a version of this embodiment,the first control element 862A permits the user to establish a controlsetting associated with a preferred pressure in the inflatable device(e.g., establish a preferred firmness level), the second control element862B permits the user to increase the pressure in the inflatable device,and the third control element 862C permits the user to decrease thepressure in the inflatable device. According to one embodiment, thecontrol elements 862B, 862C provide a continuous range of pressurecontrol. In another embodiment, the control elements 862B, 862C provideincremental pressure adjustments when selected.

According to one embodiment, the control element 869 allows the user toselect a pressure setting from among a plurality of availablefirmness/pressure settings, e.g., super-soft, soft, medium, firm, andextra-firm. In one embodiment, the control element is a switch thatslides between a plurality of positions where each position correspondsto a respective pressure setting.

In one embodiment, the fifth control element 870 allows the user toselect an automatic control feature, for example, a control mode wherebythe pressure in the inflatable device is maintained substantiallyconstant. The automatic control feature may be selected, for example, bymoving the control element 870 to a first position. In a version of thisembodiment, the fifth control element 870 can be moved to a secondposition where the automatic control not active, i.e., automatic controlis off.

Some embodiments of the control device 804 may include wirelesscommunication between the control device 804 and the pressurecontroller. Other embodiments of the control device 804 can communicatewith the pressure controller via a hardwire communication link provided,for example, by the tether 871.

According to one embodiment, an inflation system for an inflatabledevice includes a pressure control system including a pump, a valve, avalve operator and a hand held control device. In one version, theinflation system also includes one or more pressure sensors, one or moretemperature sensors and one or more position sensors.

Referring now to FIG. 9, a block diagram of a pressure control system900 employed with a two chamber inflatable device is shown. Theinflation system includes a first control device 904A for a firstchamber and a second control device 904B for a second chamber. It willbe recognized that the functionality of the control devices 904A, 904Bmay instead be included in a single control device, for example, aspreviously described concerning the control device 604.

According to one embodiment, the pressure control system 900 alsoincludes circuitry 926 included in a pressure controller (e.g., thepressure controller 206). In one embodiment, the circuitry 926 includesa processor 972, a first switch decoder 973A associated with the firstcontrol device 904A, a second switch decoder 973B associated with thesecond control device 904B, a pump controller 974, a valve controller975, a position sensor 923 (e.g., an optical position sensor, a limitswitch, etc.), a first temperature sensor 921A and a first pressuresensor 918A each associated with the first chamber, and a secondtemperature sensor 921B and a second pressure sensor 918B eachassociated with the second chamber. In a version of this embodiment, thecircuitry 926 may also include a plurality of gain and offset modules976A, 976B, 976C, 976D. In one embodiment, the offset modules 976B and976D are employed to provide bias and offset adjustment for the pressuresensors 918A, 918B, respectively, to minimize sensor output offset andvariability due to temperature changes.

The pressure control system 900 may also include power regulationcircuitry 980 used, for example, to convert an AC line voltage to one ormore regulated DC voltages employed by the circuitry 926. In oneembodiment, the power regulation circuitry 980 may include a transformerand rectifier module 977, a voltage regulator 978 for the valve motorpower supply, and a voltage regulator 979 for the logic circuitryincluded in the circuitry 926. According to one embodiment, the powerregulation circuitry 980 is included in the circuitry 926 which islocated in the pressure controller (e.g., the pressure controller 206).

Further, in one embodiment, the switch decoders 973A, 973B, the pumpcontroller 974, and the valve controller 975 may be modules, forexample, a module that includes circuitry to perform the intendedfunction.

In general, the pressure control system 900 operates with the processor972 receiving inputs supplied from the first control device 904A (i.e.,the first switch decoder), the second control device 904B (i.e., thesecond switch decoder), the first pressure sensor 918A, the firsttemperature sensor 921A, the second pressure sensor 918B, the secondtemperature sensor 921B, the first position sensor 923A, and the secondposition sensor 923B. As a result of the information received as inputs,the processor 972 provides a plurality of outputs including an output tothe pump controller 974 and an output to the valve controller 975 tooperate each of the pump motor and the valve operator, respectively.

FIG. 10 illustrates a block diagram of the power regulation circuitry980 which includes a transformer 981, a full wave rectifier 982, acapacitor 983 and a connector 984. Operation of the power regulationcircuitry 980 is well understood by those of ordinary skill in the artand is briefly explained here. The transformer 981 reduces the AC linevoltage (e.g., 120 VAC) to a lower value AC voltage (e.g., 20 VAC) whichis converted to DC voltage by the rectifier 982. The capacitor 983averages the output of the rectifier to provide a low ripple DC voltagein the range of 14 VDC when the rectifier is under load. The DC outputprovided at the capacitor 983 can be connected to control circuitry, forexample, the voltage regulator 978 for the valve motor power supply andthe voltage regulator 979 for the logic circuitry, via the connector984.

FIG. 11 provides a schematic diagram of both the voltage regulator 978and the voltage regulator 979. The voltage regulator 978 includes anadjustable voltage regulator 985, RC components 986 and an output 987.According to one embodiment, the output 987 of the voltage regulator 978is set to 13 VDC and the RC components 986 provide stability and noisereduction for the regulator 978 as is well known by those of ordinaryskill in the art. In one embodiment, the output 987 provides arelatively high current (e.g., 1 Amp) regulated output that is used bythe valve controller 975 and other portions of the circuitry 926.

The voltage regulator 979 includes a resistor 988, a diode 989 (e.g., azener diode), and an output 990. According to one embodiment, theresistor 988 and the diode 989 are configured to produce a regulatedoutput of 5 VDC in a manner that is well known by those of ordinaryskill in the art. In a version of this embodiment, the output 990provides a relatively low current 5 VDC output for operation of one ormore logic circuits included in the circuitry 926.

FIGS. 12A-12C illustrate sensing circuitry according to one embodiment.In one embodiment, the sensing circuitry is employed with a singlechamber of a multi-chamber inflatable device, e.g., the chamber 210A.Thus, the circuitry associated with the pressure sensor 918A, thetemperature sensor 921A, and the position sensor 923A for the firstchamber is described in the following. It will be recognized thatsimilar circuitry may be employed with the pressure sensor 918B, thetemperature sensor 921B, and the position 923B for the second chamber210B, and with sensors for any number of additional chambers that may beincluded in the inflatable device.

Referring now to FIG. 12A, a schematic of the pressure sensor circuitry1291 is illustrated. The circuitry 1291 includes the pressure sensor1218A, for example, a resistive bridge differential pressure sensor. Thepressure sensor circuitry 1291 generates a pressure signal (PRESSURE A)as an output. The circuitry 1291 also includes a first amplifier 1293, asecond amplifier 1294, resistors R1, R2, R3, R4, R5, R6, R8, andcapacitor C2. It should be recognized that, in one embodiment, thecircuitry 1291 also includes various circuit elements included in thegain and offset module 976B.

In one embodiment, the pressure sensor 1218A is responsive to thedifference between ambient pressure at the location of the inflatabledevice and fluid pressure in the first chamber of the device. In thisembodiment, the resistors R1, R2, R5 and R6 provide bias and offsetadjustment for the sensor and are selected to minimize sensor outputoffset and variability due to temperature changes. In addition, thecapacitor C2 and resistor R4 are connected in parallel and provide afirst order low pass filter to the pressure signal.

In operation, the pressure sensor 1218A generates a first output signal(SIG+) and a second output signal (SIG−) which are supplied to an inputof the first amplifier 1293 and an input of the second amplifier 1294,respectively. A differential gain is applied to the output of thepressure sensor to generate the pressure signal. In one embodiment,where the resistors R4 and R8 have substantially equal resistance, thepressure signal (i.e., Pressure A) is determined as shown here:Pressure A=[(SIG+)−(SIG−)][(R3+R4)/R3]  Eq. (1)

According to one embodiment, the pressure signal is sensitive to changesin temperature. In a version of this embodiment, the changes in thepressure signal resulting from changes in temperature are predictable.Thus, in one embodiment, the temperature of the pressure sensor 1218A ismonitored and a corresponding temperature signal is generated. Thetemperature signal may be used by the controller to compensate thepressure signal for any temperature related variance and provide a moreaccurate pressure signal.

According to one embodiment, as illustrated in FIG. 12B, the temperaturecompensation is provided by a thermistor RT1 which has a resistance thatvaries with changes in temperature. In FIG. 12B, it will be recognizedthat the thermistor is included in a voltage divider to generate atemperature signal output TEMP A. In one embodiment, the output of thevoltage divider corresponds to the following, where T is the temperatureof the thermistor:TEMP A=5V×[R12/(R12+RT(T))]In one embodiment, the thermistor RT1 is located in close thermalproximity to the pressure sensor 1218A to increase the accuracy of thetemperature compensation by accurately approximating the temperature ofthe pressure sensor 1218A. The signal TEMP A is employed by theprocessor to more accurately determine the pressure differential betweenthe ambient pressure and the pressure in the chamber.

According to one embodiment, the inflation system monitors theopen/closed position of the valves using a separate optical positionsensor (e.g., position sensors 223A, 223B) for each valve. For example,referring to FIG. 12C, the optical sensor 1223A for the first chamber(e.g., the chamber 210A) includes a light emitting circuit componentsuch as a light emitting diode 1295, and an associated light sensitivecircuit element such as a phototransistor 1296. In one version, theoptical sensing circuitry provides a voltage output OPTOSENSE A.

The circuitry in FIG. 12C operates such that the phototransistor 1296 isoff and the output OPTOSENSE A is high when no light is detected by thephototransistor 1296. When the phototransistor 1296 detects light thetransistor conducts and the output OPTOSENSE A is low. The signalproduced at the output OPTOSENSE A is supplied to the processor 972.

Other types of sensing devices and associated circuitry may be used invarious embodiments of the invention. For example, the pressure sensors(e.g., the pressure sensors 218A, 218B) may be solid state devices thatare secured to PC boards including a mother board for the electroniccircuitry 226. In some embodiments, the to pressure sensors provide ananalog output signal corresponding to the sensed-pressure while in otherembodiments the pressure sensor provides a digital output. Further,other temperature sensors (e.g., the temperature sensors 221A, 221B)such as thermocouples may be employed in embodiments of the invention.In one embodiment, the temperature sensors include integral circuitry tomodify the signal provided by a temperature sensing device (e.g., thethermistor RT1) and provide a temperature signal (e.g., the signal TEMPA).

In addition, embodiments of the invention may employ other approaches tosensing the position of the valves (e.g., the valves 216A, 216B). Forexample, limit switches may be employed to sense the valve position, theposition of the valve operator (e.g., the valve operator 220), and/orthe position of the mechanical coupling (e.g., the mechanical coupling222).

According to one embodiment, valve-position sensing is accomplished byusing the position sensors (e.g., the position sensors 223A, 223B) tomonitor a change in position of a mechanical coupling (e.g., themechanical coupling 222) that couples the valve operator (e.g., thevalve operator 220) and the valve (e.g., the valve 216A). In oneversion, the mechanical coupling is a bar or a disk.

In one embodiment, the light emitting component (e.g., the LED 1295) andthe light sensing component (e.g., the phototransistor 1296) are locatedsuch that the mechanical coupling blocks the light source from the lightsensing component when the valve is in a first position and permits thetransmission of the emitted light to the light sensing component whenthe valve is in a second position. For example, a generally solidmechanical coupling can include one or more slits or openings that arelocated in the coupling to provide for light transmission/light blockingsuch that the output OPTOSENSE A has a low output (i.e., light isdetected) when the valve is open and a high output (i.e., light is notdetected) when the valve is closed. As will be recognized by thoseskilled in the art, the slits or openings may be located to provide theopposite logic convention, i.e., a low output when the valve is closedand a high output when the valve is open.

Further, as illustrated in FIG. 4, a single mechanical coupling may beused to connect the valve operator to a plurality of valves where asingle valve operator is employed to operate each of the plurality ofvalves. According to one embodiment, the mechanical coupling may includeslits or openings to allow light detection by the first position sensor(e.g., the position sensor 223A) when the valve for the first chamber isopen (e.g., the valve 216A), light detection by the second positionsensor (e.g., the position sensor 223B) when the valve for the secondchamber is open (e.g., the valve 216B), and light to be detected by boththe first position sensor and the second position sensor when bothvalves are closed (e.g., with the mechanical coupling in a neutralposition).

Operation of the valve controller 975 can also be implemented using anyof a variety of approaches to control operation of the valve operator.FIG. 13 illustrates a schematic of the valve controller 1375 inaccordance with one embodiment. The valve controller 1375 provides acontrol circuit to operate two valves (e.g., the valves 216A, 216B)using a single valve operator 1320 where the valve operator is a motor.Because the valve operator 1320 may open each of the two valves,according to one embodiment, the valve operator may be operated in oneof four states, a first state where the valve operator is in an offstate, a second state where the valve operator operates to open a valveto the first chamber, a third state where the valve operator operates toopen a valve to the right chamber, and a fourth state where the valveoperator is in a braking mode.

The valve controller 1375 includes a “H-bridge” design employing fourDarlington transistors Q1, Q2, Q3, Q4 to control the direction ofcurrent flow to the motor, and as a result, to control the state of thevalves. The operation of the circuit is well known to those of ordinaryskill in the art and is therefore only explained briefly here.

In the first state, none of the Darlington transistors is conducting andthe valve operator 1320 is de-energized. In the second state,transistors Q1 and Q6 are on, transistors Q2 and Q5 are off, and themotor rotates in a first direction. The second state can be employed tomove the valve operator 1320 such that the mechanical coupling engagesand opens the valve to the first chamber (for example, from the neutralposition). In addition, the second state can be employed to return themechanical coupling to the neutral position when it has previously beenengaged with and opened the valve to the second chamber. In the thirdstate, transistors Q2 and Q5 are on, transistors Q1 and Q6 are off, andthe motor operates in a second direction. The third state can beemployed to move the valve operator 1320 such that the mechanicalcoupling engages and opens the valve to the second chamber. In addition,the third state can be employed to return the mechanical coupling to theneutral position when it has previously been engaged with and opened thevalve to the first chamber. In the fourth state, the transistors Q1 andQ2 are on, the transistors Q5 and Q6 are off and the motor operator isin a braking state.

FIG. 14A illustrates a control device 1404A and a switch decoder 1473Ain one embodiment of the invention. According to one embodiment, thecontrol device 1404 may be a hand-held control device that is tetheredto a pressure controller (e.g., the pressure controller 206). Asdescribed above, the control device may include a plurality of controlelements 1462A, 1462B, 1462C, 1462D, 1462E that are included in a userinterface (e.g., the user interface 661) that allows the user to selectand operate the control elements. According to one embodiment, thecontrol elements are momentary contact switches, for example, singlepole, single throw switches that are normally open. In a version of thisembodiment, the user depresses the control elements to change them fromthe open state to a closed state. In addition, the control device forthe left chamber includes a multiplexer U5 where each of the contactswitches are provided as an input to the multiplexer. The multiplexerincludes an output WAND0 that is supplied to the processor 972.Additional inputs WANDMUX0, WANDMUX1, WANDMUX2 are also connected to theprocessor 972. The inputs WANDMUX0, WANDMUX1, WANDMUX2 are employed tosequentially connect each of the switch inputs to the output WAND0.

A closed contact results in a logic low signal and an open contactresults in a logic high signal. In operation, the processor (e.g., aprocessor 1472 of FIG. 14C) supplies signals to the inputs WANDMUX0,WANDMUX1, WANDMUX2 to select the switch whose corresponding multiplexerinput will be supplied to the multiplexer output WAND0. According to oneembodiment, the processor 1472 sequentially connects each of themultiplexer inputs to the multiplexer output at a rate of speed that isfaster than the rate at which a user can press and release the switch.Thus, the processor 1472 can detect when any of the contact switches areselected and the amount of time for which any contact switch isselected. For example, in one version, the processor scans the switchesevery 0.001 seconds. As a result, the length of time a switch isselected can be determined to within 0.001 seconds.

According to one embodiment, the switch S1 corresponds to a userselection to increase the pressure level in the chamber, the switch S2corresponds to a user selection to decrease the pressure level in thechamber, the switch S3 corresponds to a user selection to return to ahome position, the switch S4 corresponds to a user selection to decreasethe pressure in the chamber in one or more steps, and the switch S5corresponds to a user selection to increase the pressure in the chamberin one or more steps. Further, in this embodiment, the user may increaseor decrease the pressure level in the chamber within a continuous rangeof adjustment by pressing and holding the control element correspondingto the switch S1 and the switch S2, respectively. Thus, in oneembodiment, the pressure controller may operate to adjust the pressurein the chamber where the amount of adjustment is determined by thelength of time a switch remains closed (i.e., remains selected by theuser). For example, where the switches S1 or S2 are selected thepressure controller may adjust the pressure without determining apressure differential between the current chamber pressure and thedesired chamber pressure.

In one embodiment, the multiplexer 1473A is located in the pressurecontroller and a communication link 1497 allows communication betweenthe control device 1404A and the multiplexer 1473A. The communicationlink 1497 may be a wireless communication link or, as illustrated inFIG. 14A, a hardwired communication link. Where the communication link1497 is wireless, a transmitter may be included in the control device1404A to transmit signals corresponding to the switch outputs (e.g., theoutputs of control elements 1462A, 1462B, 1462C, 1462D, 1462E) from thecontrol device 1404A to the multiplexer 1473A, for example, via areceiver located in the pressure controller.

In one embodiment, the control device 1404A includes a transceiver thatallows the control device 1404 to receive signals transmitted by thepressure controller. That is, the pressure controller may transmitinformation to the control device. For example, the pressure controllermay transmit information corresponding to the pressure of the inflatabledevice and the pressure may be received by the control device anddisplayed in the user interface, e.g., the user interface 661. In oneembodiment, the electronic circuitry (e.g., the electronic circuitry226) includes a transceiver to both send signals to and receive signalsfrom the control device 1404D.

The control device 1404A may include control elements used to controlthe pressure in a single chamber or multiple chambers. In oneembodiment, a single set of control elements (e.g., control elements1462A, 1462B, 1462C, 1462D, 1462E) are used to control the pressure in aplurality of chambers, for example, by using a selector switch (e.g.,the selector switch 664). In another embodiment, separate controlelements are employed for each of a plurality of chambers in theinflatable device. In yet another embodiment, separate control devicesare employed for each of a plurality of chambers.

According to one embodiment, a first control device and a second controldevice are employed for a first chamber and a second chamber,respectively, of the inflatable device. FIG. 14B illustrates a secondcontrol device 1404B for controlling the pressure in a second chamber ofan inflatable device where the control device 1404A provides control forthe pressure in the first chamber. Where a plurality of control devices1404A, 1404B are employed, each of the control devices may employwireless communication with a pressure controller.

FIG. 14C illustrates the processor 1472 according to one embodiment ofthe invention. The processor 1472 receives as inputs: a signalcorresponding to the pressure in a first chamber of the inflatabledevice (PRESSURE0); a signal corresponding to the pressure in a secondchamber of the inflatable device (PRESSURE1); a signal corresponding tothe temperature of the first pressure sensor to (TEMPERATURE0); a signalcorresponding to the temperature of the second pressure sensor(TEMPERATURE1); a signal corresponding to the position of the valve tothe first chamber (OPTOSENSE0); a signal corresponding to the positionof the valve to the second chamber (OPTOSENSE1); signals from themultiplexers (WAND0 RD, WAND1 RD), and programming inputs (PGC, PGD). Inaddition, the processor 1472 provides outputs for pump control (PUMPON); valve operator control (VLVMTR0, VLVMTR1); and multiplexer control(WANDMUX0, WANDMUX1, WANDMUX2).

According to one embodiment, the processor 1472 is a microcontrollersuch as a programmable logic device that monitors and processes logicsignals and generates the appropriate output logic signals for thecontrol of pressure in the inflatable device. In one embodiment, theprocessor 1472 includes an integral analog-to-digital (“A/D”) converter.According to one embodiment, the temperature and pressure signals areanalog signals that are converted to digital signals by the processor1472. In addition, the processor may also include an internal timingfunction (e.g., a clock signal) that allows cyclical, timed scanning ofthe control elements (e.g., the control elements 1462A, etc.), forexample, to determine which of the contacts are in a closed state andfor how long.

In general, the valve operator remains de-energized while the processorfirst scans the state of the control elements. In one embodiment, theprocessor 1472 detects when a control element transitions to a closedstate and, in response, determines which chamber is affected and whetherthe user is requesting a pressure increase or a pressure decrease. Theprocessor 1472 supplies a signal to the valve operator (e.g., the signalVLVMTR0 or VLVMTR1) to operate the correct valve while monitoring theoutput of the position sensors, e.g., 1423A, 1423B. The valve operatoris de-energized when the output of the position sensors indicates thatthat valve is in the correct position. In this embodiment, the pump isturned on if inflation is required as a result of the user's input tothe control device 1404.

In one embodiment, the processor 1472 generates a value indicative ofthe pressure differential between the chamber pressure and the ambientpressure. As the pressure in the chamber is adjusted, the valueindicative of the pressure differential is periodically compared to atarget value determined by the state of the control elements (e.g., thecontrol element 1472A) selected by the user. When the value indicativeof the pressure differential corresponds to the target value the currentpressure adjustment is complete, i.e., enough fluid has been eitheradded to or released from the chamber. The processor 1472 provides asignal to the valve operator to close the open valve. If fluid was addedto the chamber, the processor 1472 also provides a signal to turn offthe pump. According to one embodiment, the pump is turned off when theposition sensors indicate that the mechanical coupling is in a positionwhere the valves to each chamber are closed, e.g., in a neutralposition.

FIG. 14D illustrates an embodiment where the PUMP ON signal is a logicHI signal that operates the transistor Q9 to energize the coil of a pumprelay which then operates to close a set of contacts that operate at 120VAC to turn the pump motor on.

FIGS. 15A and 15B illustrate a flow diagram of a process 1000 formonitoring and controlling the pressure in an inflatable deviceaccording to one embodiment. In general, the user requests an adjustmentof the pressure in the inflatable device by selecting a control element.Referring to FIG. 7, for example, if the inflatable device is at thesuper-soft level of inflation and the control element for a firm levelof inflation is selected (e.g., the control element 762D) the pressurecontroller operates to change the pressure level from super-soft to firmby adding fluid to the selected chamber. If the inflatable device isalready at the firm level, a change in pressure is not required.Similarly, where the inflatable device is at the pressure associatedwith the extra-firm setting, a selection of the firm setting results inthe pressure controller operating to decrease the pressure by releasingfluid from the selected chamber.

At Stage 1001 a pressure control system monitors the inputs from thecontrol device to determine whether any control elements are selected.If no control elements are selected, the process returns to the start ofStage 1001. If a control element is selected, however, the processproceeds to Stage 1002 where the chamber associated with the selectedcontrol element is determined. Of course, Stage 1002 may be unnecessaryin a single-chamber inflatable device. At Stage 1004, the existingpressure in the selected chamber is determined. At Stage 1006, thedifference in pressure between the existing pressure in the chamber andthe selected pressure is determined. If no difference in pressure exists(for example, if a user requests the firm pressure level when the deviceis already at the firm pressure level), the process returns to Stage1001. Otherwise, the process continues at Stage 1008 where it isdetermined whether a pressure decrease is required. If a pressuredecrease is required to adjust the pressure of the selected chamber tothe desired pressure level, at Stage 1010, the valve to the chamber isopened to allow fluid to escape from the chamber. At Stage 1012, thepressure control system continues to monitor the pressure in the chamberuntil the selected pressure is reached. At Stage 1014, the valve to thechamber is closed when the selected pressure is reached. Stage 1014 mayinclude an operation whereby a position sensor provides feedbackconcerning the position of the valve.

It should also be apparent that, in various embodiments, the stagesillustrated in FIGS. 15A and 15B need not occur only in the sequenceillustrated and that the process 1000 may include fewer stages,additional stages, and stages occurring in a different sequence. Forexample, stage 1008 may be replaced with a stage in which it isdetermined whether a pressure increase is required. In this approach,the process proceeds to Stage 1018 if an increase is required, andproceeds to Stage 1010 if a pressure decrease is required.

Further, it may be unnecessary to determine a pressure difference wherea pressure adjustment is initiated with the selection of a controlelement associated with a continuous range of adjustment. For example,where a control element such as the element 762B (firmer) or element762C (softer) are selected, a change in pressure is generally required.Thus, the process 1000 may bypass Stage 1006 and proceed to Stage 1008to determine whether the pressure should be increased or decreased. Asdescribed previously, the amount of the change in pressure may bedetermined by the length of time the control element is selected by theuser.

Referring to Stage 1008, a pressure increase is required when thepressure to difference determined at Stage 1006 indicates that theselected pressure is greater than the existing pressure in the chamber.At Stage 1018, the processor provides a signal to open the valve. In oneembodiment, the pressure control system confirms that the valve is open,at Stage 1020, before the pump motor is energized. Once the processorreceives a signal from the position sensor indicating that the valve isopen, the pump motor is started at Stage 1022 and fluid is added to thechamber. It should be apparent, however, that in other embodiments, thevalve may be opened as the pump is turned on. At Stage 1024, thepressure control system continues to monitor the pressure in the chamberto determine if the selected pressure is reached. At Stage 1026, thevalve is closed when the selected pressure is reached. In oneembodiment, where a single motor operated pump is employed to inflatemultiple chambers, the motor is not turned off until the processordetects that the valve for each chamber is closed. According to thisembodiment, at Stage 1028, the system determines whether the valves areclosed. At Stage 1030, the pump motor is turned off if the valves areclosed.

In addition, in some embodiments, the pressure controller (e.g., thepressure controller 206) may be employed to automatically maintain apressure in the inflatable device, for example, to maintain the user'spreferred pressure. For example, the system may include an “auto-on”feature that automatically monitors and adjusts the pressure in theinflatable device. Stage 1032 illustrated in FIG. 15A provides oneapproach for maintaining a minimum pressure in a chamber of aninflatable device where, for example, the user has previouslyestablished a preferred pressure. In one embodiment, Stage 1032 can beincluded in the process 1000 as shown in FIG. 15A where it may beexecuted concurrently with some of the previously-described stages ofthe process. With the auto-on feature active, at Stage 1032, theprocessor determines whether the pressure in the inflatable device isless than the pressure value previously established by the user (e.g., asetpoint). If the pressure is not lower than the setpoint, the processcontinues to monitor the actual pressure relative to the setpoint atStage 1032. If the pressure has dropped below the setpoint, then theprocess continues at Stage 1018, as described previously, to increasethe pressure in to the chamber until the selected pressure is reached(i.e., the setpoint) as determined at Stage 1024.

In a version of the preceding embodiment, the process 1000 may beemployed to maintain a pressure corresponding to the setpoint. That is,the pressure controller may not only add fluid to increase the chamberpressure but is may also operate to release fluid from the chamber ifthe pressure has increased above the setpoint, for example, as a resultof an increase in the ambient temperature where the inflatable device islocated.

Stage 1033 illustrated in FIG. 15A illustrates one approach tomaintaining the inflatable device at or below a minimum pressure. Withthe auto-on feature active, at Stage 1033, the processor determineswhether the pressure in the inflatable device is greater than thepressure value previously established (e.g., a setpoint) for the maximumallowable pressure. If the pressure is not greater than the setpoint,the process continues to monitor the actual pressure relative to thesetpoint at Stage 1033. If the pressure has increased above thesetpoint, then the process continues at Stage 1010, as describedpreviously, to decrease the pressure in the chamber until the selectedpressure is reached (i.e., the setpoint) as determined at Stage 1012.

According to one embodiment, the user employs the control device 604 andone or more control elements 662 to establish the setpoint. The userthen transmits the setpoint or information corresponding to the setpointto the pressure controller 206 where it is stored in memory included inthe electronic circuitry 226.

According to another embodiment, the pressure controller may include a“pressure-relief” setting that automatically reduces the pressure in theinflatable device to a pre-set value when an established maximumpressure is sensed. In various embodiments, the maximum pressure may beestablished by the user (for example, using the control device 604) orby a manufacturer or distributor of the inflatable device. In theseembodiments, the pressure controller may operate to open the valve andexhaust fluid from a chamber when the pressure controller determinesthat the pressure in the chamber exceeds the maximum value, for example,as described above with reference to Stage 1033.

Referring now to FIG. 16, in one embodiment, the system (e.g., thesystem 100, 900) is employed with an inflatable device 1602 thatincludes a plurality of chambers. In the illustrated embodiment, a firstchamber 1610 is a comfort layer and a second chamber 1697 is a supportlayer. In one embodiment, a pressure controller (e.g., the pressurecontroller 106) is fluidly coupled to the first chamber 1610 and thefirst chamber is fluidly coupled by a valve 1698 to the second chamber1697. The valve 1698 can be a self-sealing valve. In addition, the valvecan be a one-way valve for example a check valve that allows fluid toenter the second chamber from the first chamber.

Referring now to FIG. 23A, a mattress 2360 may include a bladder 2362and the mattress may be set on a frame 2364. The bladder 2362 may befluidly coupled to a pressure controller as previously described.

FIG. 23B illustrates an embodiment where the mattress 2366 includes acombination of an inflatable bladder 2367 and a compressible layer 2368that can provide a greater degree of comfort than the mattress 2360illustrated in FIG. 23A. According to one embodiment, the bladder 2367is relatively thin, that is, it may be 2″ thick, or less than 2″ thickwhen fully inflated. The compressible layer may be a layer of foam, aninner spring or other structure that can compress when weight is placedupon it. According to one embodiment, the compressible layer 2368interacts with the inflatable bladder 2367 to distribute the weight ofthe user in a manner that increases the user's level of comfort andallows the user to feel subtle changes in pressure within the inflatablebladder.

In various embodiments, the inflatable bladder 2367 may be coupled to apressure controller as previously described. Further, a control device(e.g., the control device 2204) may be employed to adjust the firmnessof the inflatable device as described above. In addition, variousmulti-layer embodiments may include three or more layers which mayinclude either or both of a plurality of inflatable bladders and aplurality of compressible layers. According to one embodiment, theinflatable bladder 2367 and the compressible layer 2368 are integratedinto an upper layer of a mattress of conventional size, shape andappearance.

FIGS. 17A-17D illustrate inflatable devices that may be employed with asystem (e.g., the system 100, 200, 900) in various embodiments. Asindicated in the figures, FIG. 17A illustrates a seat cushion, FIG. 17Billustrates a travel pillow, FIG. 17C illustrates a headrest pillow, andFIG. 17D illustrates a lumbar pillow. In various embodiments, each ofthe inflatable devices 1702 may be employed with a pressure controller(e.g., the pressure controller 102), a control device (e.g., the controldevice 104), and a pump (e.g., the pump 108). The fluid couplings forcoupling the pressure controller to the pump and to the chamber can beadapted to suit the type of inflatable device with which the controllerand pump are employed, for example, a flexible conduit can be employedto couple the pressure controller to the inflatable device. Each of theembodiments illustrated in FIGS. 17A-17D may, for example, be employedwith an inflatable device as an accessory device as previously describedwith reference to FIG. 1. In these embodiments a port 1751 may befluidly coupled to the pump 108, for example, by a fluid conduit. In oneembodiment, the port 1751 includes a self-sealing valve.

Further, each of the pressure control systems illustrated herein mayinclude any of a variety of embodiments of the pressure controller. Asillustrated in FIG. 18, a pressure controller 1806 may include a housing1854 in which an integral pump 1808, a first valve 1816A, a second valve1816B, a first valve operator 1820A and a second valve operator 1820Bare located. According to one embodiment, the valve operators 1820A,1820B are solenoids that open the associated valve when energized. In aversion of this embodiment, the valve operators 1820A, 1820B areconnected to the associated valve by their respective mechanicalcoupling 1822A, 1822B. In a version of this embodiment, the valves1816A, 1816B are biased closed by a spring or other structure includedin the valve as described below.

In one embodiment, the pressure controller 1806 is fluidly coupled to aninflatable device that includes a first chamber 1810A and a secondchamber 1810B. In this embodiment, fluid enters and exits the chambers1810A, 1810B via a single valve 1826A, 1826B, respectively.

According to one embodiment, the pressure controller 1806 includes anelectromechanical device 1855 that biases a control arm 1857 to isolatethe chambers 1810A, 1810B from the pump 1808, i.e., to provide a fluidtight seal between the pump 1808 and the valves 1816A, 1816B. In oneembodiment, the electromechanical device 1855 biases the control arm1857 to one of two positions to either allow fluid to be provided to orexhausted from the first chamber 1810A or the second chamber 1810B. Inparticular, the electromechanical device 1855 biases the control arm1857 so as to seal off one of the valves from the pump so that fluid canonly be provided to or exhausted from one chamber at a time. Forexample, the first chamber 1810A may be filled with fluid from the pump1808, wherein the valve 1816A opens up under pressure of fluid providedby the pump 1808. With this condition, the control arm 1857 is rotatedunder influence from the electromechanical device 1855 to a position toseal off the valve 1816B from the pump 1808 such that fluid is preventedfrom being provided to the second chamber 1810B. It is to be appreciatedthat with this arrangement, the control arm 1857 can also be rotated toa second position to seal off the first chamber 1810A from the pump1808, such that fluid is prevented from being provided to the firstchamber 1810A. In the second position of the control arm 1857, fluid canbe exhausted from or provided to the second chamber 1810B. In otherwords, in one embodiment of the pressure controller 1806 of FIG. 18,only one of the two chambers may be inflated or exhausted at any onetime. It is thus to be appreciated that with the arrangement of FIG. 18,one chamber cannot be inflated at the same time that the second chamberis deflated. It should also be appreciated that the electromechanicaldevice 1855 may not be included in some embodiments which employ anoverseal (e.g., the overseal 236B).

A variety of pumps or other fluid moving devices may be employed withthe inflatable device where the pump selection may depend, in part, onthe fluid with which the chamber is filled. For example, where thechamber is filled with air, the pump 1808 may be an air pump thatincludes a motor 1809 and an impeller 1811. The pump 1808 can also belocated remote from the pressure controller 1806 where the pump 1808 andthe controller 1806 are fluidly coupled by a fluid conduit.

FIG. 19 illustrates another embodiment of a pressure controller 1906that may include an integral pump 1908. The pressure controller 1906differs from the pressure controller 1806 because the pressurecontroller 1906 includes a single valve operator 1920 (e.g., a motor)that can operate in a plurality of positions to alternatively open eachof a plurality of valves 1916A, 1916B. For example, the valve operator1920 may open the valves 1916A, 1916B via a mechanical coupling 1922.

In addition, in one embodiment, a shaft 1959 may also be mechanicallycoupled to the valve operator 1920 and the control arm 1957 toselectively isolate the valves 1916A, 1916B from the pump 1908 generallyin the manner described with reference to FIG. 18. However, in thisembodiment, the electromechanical device 1855 is not required. Instead,the control arm 1957 is operated by the valve operator 1920 to fluidlycouple the pump to the chamber that is being inflated or deflated whilethe remaining chamber remains isolated.

Embodiments of the system (e.g., the system 100, 200, 900) may alsoallow the pressure controller to be located in any of a variety oflocations. Referring to FIG. 20, the inflatable device includes achamber 2010 (e.g., an inflatable bladder) where the pressure controller2006 includes a valve housing 2007 and a pump 2008 that are locatedwithin a profile of the chamber 2010. According to one embodiment, avalve, electronic circuitry, a pressure sensor, a temperature sensor,and a valve operator are included in the pressure controller 2006. Inone embodiment, electric power is supplied to the pressure controller2006 via an electrical cord 2017.

In various embodiments, a hand held control device may be employed withany of the pressure controllers 1806, 1906, and 2006, for example, tocommunicate a user's preferred pressure setting to the pressurecontroller.

The valves employed with the pressure control system may include any ofa variety of valves. For example, the valves may include a diaphragmincluding either a flexible diaphragm, a semi-rigid diaphragm, or arigid diaphragm. The valves may be mechanically coupled to a valveoperator that is employed to open and close the valve. In someembodiments, the valve is a self-sealing valve that is biased closed bya spring or other structure included in the valve. In versions of theseembodiments, the self-sealing valve may be biased open by the pressureof the fluid that is exhausted from the outlet of the pump (e.g., thepump 108) included in the pressure control system.

FIG. 21A is a cross sectional view of one embodiment of a self-sealingvalve assembly that can be used with embodiments of the pressure controlsystem described above. FIG. 21A illustrates the valve 2116 in a closedposition. This embodiment and other embodiments of a self-sealing valveassembly are described in more detail in U.S. Pat. No. 6,237,621 ownedby applicant, which is incorporated herein by reference.

According to one embodiment, the self-sealing valve includes a singleport, that provides for inflation, deflation and comfort control of theinflatable device in which the self-sealing valve is integrated. Theself-sealing valve 2116 self-opens upon inflation of the device by aninflation device, for example, by turning the pump on, and self-sealsupon cessation of inflation.

In one embodiment, the single fluid port may have an unobstructed fluidpath that is greater than approximately 0.25 inches in diameter.However, it is to be appreciated that the single fluid port may haveother diameters to accommodate different inflatable devices sizes andfluid flow parameters.

Referring to FIGS. 21B and 21C, there are illustrated various views ofthe embodiment of the self-sealing valve 2116 of FIG. 21A in an openposition when employed with an air fluid system. Some of the structurethat allows for the self-sealing valve to operate as herein describedincludes a diaphragm 2102 positioned within a valve housing 2106 by amovable hanger arm 2110 which suspends the diaphragm from a mountingpoint 2112 in the center of an air inlet 2114. The hanger arm 2110 is arotating diaphragm hanger that is removably contained within the airinlet 2114 of the valve housing 2106, with one end secured adjacent toan inner wall 2118 of the air inlet 2114. A point of attachment of theone end of the hanger arm 2110 to the inner wall 2118 is configured toallow the hanger arm 2110 to pivot downward into the valve housing 2106,a motion which unseats the diaphragm 2102 from a valve seat 2120, in aclosed position, and opens an airpath into the bladder of the chamber toallow for both inflation and deflation of the surface comfort layerdevice.

According to one embodiment of the self-sealing valve 2116, the hangerarm 2110 flares outward towards the inner wall 2118 of the air inlet2114 creating a “paddle” surface 2122 which occupies some of the airinlet 2114. The paddle surface 2122 of the hanger arm 2110 providesstability to the flexible diaphragm 2102 as it rotates with the hangerarm 2110 from the closed position to the open position. The paddlesurface 2122 of the hanger arm 2110 may also facilitate manipulation ofthe hanger arm 2110 by, for example, a valve operator and an associatedmechanical coupling, to control a pressure of the inflatable device inwhich the self-sealing valve is integrated. An embodiment of amechanical coupling 2133 is illustrated in phantom in FIG. 21C. Thepaddle surface 2122 projects outward to a point 2126, extending thelength of the hanger arm 2110. This projection bears upon the flexiblediaphragm 2102, thereby preventing it from flexing upward when thehanger arm 2110 is pressed downward for firmness control or deflation.

The hanger arm 2110 may be secured within the air inlet 2114 with, forexample, a pair of hinge pins 2134. In one example, there is a contouredsection 2148 between the hinge pins 2134 of the inner wall of at leastone of the brackets and the inner wall 2118 of the air inlet 2114. Thecontoured section 2148 interfaces with a contoured end 2150 of theprojecting tabs to provide a plurality of distinct interactionpossibilities. A first possibility exists when surface 2151 on theprojecting tabs bears on surface 2152 of the inner wall, restrictingrotation of the arm above a horizontal position, thereby securing thevalve diaphragm in a substantially closed position.

A second possibility exists when a beveled surface 2155 on theprojecting tab bears on counter-beveled surface 2156 on the wall. Aninclined angle of this counter-beveled surface 2156 causes theprojecting tab to increasingly compress inward as the hanger arm 2110 ispressed downward into the valve housing 2106. This may occur both duringinflation (by air pressure or deflection of the hanger arm by the valveoperator) and deflation (deflection of the hanger arm engaged by thevalve operator to unseat the valve from the valve seat). The compressionof the projecting tab also results in a counter action, so that, withremoval of the downward pressure the tab “springs back” to its originalposition and forces the hanger arm 2110 and diaphragm 2102 to return tothe closed position. When the hanger arm 2110 is depressed fully (forexample at the maximum stroke of the valve operator), the projectingtabs rotate slightly beyond the counter-beveled surface 2156 and lockthe rotating arm in a locked open position. This locked open positionmaximizes airflow through the valve housing and will, under certainconditions improve efficiency of both inflation and deflation.

Referring now to FIG. 24A, an apparatus for storing a handheld controldevice 2470 is illustrated according to various embodiments of theinvention. In accordance with one embodiment, the apparatus 2470includes a base 2472 with an arm 2474 projecting from the base. In oneembodiment, the arm 2474 includes a proximate end 2475 and a distal end2473. Further, the apparatus 2470 may also include a receiving member2476 which in some embodiments may include a housing and/or receptacle.In various embodiments, apparatus 2470 may be configured to receive anyof a wireless handheld control device and/or a hardwired (e.g.,tethered) handheld control device.

In general, the apparatus 2470 is configured to locate a control device2404 within reach of a user while the user is employing an inflatabledevice. Embodiments of the apparatus 2470 may be employed with all typesof inflatable devices. In particular, embodiments of the apparatus 2470may be employed with one or more body support devices such asmattresses, pillows, seat cushions, lumbar support devices and/or bodypillows. According to various embodiments, the receiving member 2476 isconfigured to both secure the control device 2404 to the apparatus 2470and to allow the user to remove the control device from the apparatus,e.g., when the user is employing the inflatable device. Accordingly, theuser may employ the apparatus 2470 to locate [e.g. removably locate] thecontrol device 2404 in a known location that is easily accessed when theuser is employing the inflation device and which allows operation of thecontrol device from multiple positions including those provided with thecontrol device 2404 received by the apparatus 2470. Thus, in someembodiments, the apparatus 2470 allows the user to more easily operatethe control device 2404 to adjust an inflation level of the inflatabledevice while the user maintains contact with the inflatable device. Forexample, embodiments allow the user to employ the control device 2404 toadjust the inflation level while the user maintains contact with theinflatable device when the control device 2404 is received by theapparatus 2470.

According to one embodiment, the base 2472 is configured to secure theapparatus 2470 adjacent the inflatable device. In one embodiment, thearm 2474 projects substantially perpendicular from the base 2472.Further, in one embodiment, the receiving member 2476 is located at thedistal end 2473 of the arm 2474 while the proximate end 2475 isconnected to the base 2472. It should be recognized that the receivingmember 2476 need not be located at the distal end 2473 but may insteadbe located at any other position along the length of the arm 2474. Invarious embodiments, the receiving member 2476 is configured to allowthe secure storage of the control device 2404 while also facilitatingeasy attachment and removal of the control device 2404 to and from,respectively, the apparatus 2470.

Referring now to FIG. 24B, the apparatus 2470 is illustrated without thecontrol device 2404. FIG. 24B illustrates one embodiment of thereceiving member 2476. In this embodiment, the receiving member 2476includes a base 2478, a first sidewall 2479 and a second sidewall 2480.The base 2478 and the first and second sidewalls 2479, 2480 define anopening 2481 in which the control device 2404 is received. In oneembodiment, the first and second side walls 2479, 2480 are attached atopposite sides of the base 2478. Further, in some embodiments, the sidewalls may include a rim 2485, 2486, respectively, that are configured toretain the control device 2404 within the opening. FIG. 24B alsoillustrates an embodiment of the apparatus 2470 where the base 2472includes a flange 2477 to which the proximate end of the arm 2474 isattached.

As illustrated in FIG. 24A, in some embodiments, the opening 2481 isconfigured to allow access to the control elements of the control device2404 when the control device 2404 is received by the receiving member2476. Accordingly, these embodiments allow the user to manipulate and/oractivate the control elements when the control device 2404 is receivedby the receiving member 2476.

As is described in further detail below, the receiving member 2476 maytake a variety of forms. For example, the receiving member 2476 mayprovide a structure that allows the control device 2404 to be located atany of the plurality of locations along the arm 2474. Such a structuremay be provided via a plurality of fixed locations along the arm 2474.Alternatively, or in combination therewith, a structure including aplurality of positions may be provided via one or more adjustableelements of the apparatus 2470. In one embodiment, the adjustment(s)allow the user to adjust the location of the receiving member 2476.

According to various embodiments, the base 2472 may include anystructure that allows the apparatus 2470 to be securely located adjacentthe inflatable device. Here, the term securely refers to the fact thatthe apparatus 2470 is located in a substantially fixed location thatremains fixed during normal use of the inflatable device. As will beapparent to one of ordinary skill in the art, however, these embodimentsof the apparatus 2470 also allow the user to adjust and reposition theapparatus 2470 and/or receiving member 2476 with respect to theinflatable device. For example, a first user may prefer to locate theapparatus 2470 closer to the head of a mattress. A second user, however,may prefer to locate the apparatus 2470 nearer the user's waist or on anopposite side of the mattress. Embodiments of the apparatus 2470 allowthe relocation of the apparatus to a plurality of locations adjacent theinflatable device with which it is used. Accordingly, embodiments of theapparatus 2470 allow the relocation of the control device 2404, whenreceived by the receiving member 2476, to a plurality of locations withrespect to the inflatable device.

In various embodiments, the base 2472 need not include a shape that issubstantially flat. Instead, the base 2472 may be any shape and includeany structure that allows the apparatus 2470 to be securely locatedadjacent the inflatable device. For example, the base 2472 may include aclamp or other hardware that allows the base to be attached to theinflatable device, a frame of the inflatable device or to adjacentstructure such as a headboard, or a table/nightstand located adjacentthe inflatable device.

Referring now to FIG. 25A, there is illustrated an apparatus 2470 isshown in use with an inflatable device. In the illustrated embodiment,the inflatable device is included in a mattress 2482. However,embodiments of the apparatus 2470 may be employed with all forms ofinflatable devices that provide support for all or a portion of a user'sbody. In one embodiment, the mattress 2482 is included in a bed thatincludes a foundation 2484 that supports the mattress 2482 above thefloor.

According to one embodiment, the base 2472 of the apparatus 2470 isinserted between the mattress 2482 and the foundation 2484 to locate theapparatus (including the receiving member 2476) at a suitable locationwhich is easily accessed by a person using the bed. Further, in theillustrated embodiment, the flange 2477 provides a lip that may engagethe foundation 2484 such that the arm 2474 and receiving member 2476 arelocated proximate the inflatable device when the base 2472 is fullyinserted between the mattress 2482 and the foundation 2484.

Referring now to FIG. 25B, the apparatus 2470 is illustrated with thecontrol device 2404 removed from it. For example, a user lying on theinflatable device 2482 may desire to have the control device 2404in-hand to adjust the inflation level of the inflatable device 2482.Following an inflation adjustment, the user may return control device2404 to the apparatus by placing it in the receiving element 2476. Theapparatus 2470 provides the user ready access to the receiving member2476 and consequently the control device 2404 when it is received by thereceiving member. Accordingly, the user lying on the mattress is awareof the location of the control device 2404. Further, the apparatus 2470allows the control device to be stored in a location that isconveniently accessed yet out of the way.

According to one embodiment, the user may locate the receiving element2476 within reach when employing the inflatable device. Such an approachallows the user to manipulate and/or activate the control elements ofthe control device 2404 without removing the control device from thereceiving member. Thus, in some embodiments, the user may adjust theinflation level of the inflatable device without removing the controldevice 2404 from the receiving member 2476.

According to the illustrated embodiment the apparatus 2470 also allowsthe user to adjust the location of the apparatus 2470 and consequentlythe receiving member 2476 to any of a variety of positions by moving theapparatus 2470 laterally to the left or right as illustrated withreference to FIG. 25B. That is, the base 2472 may be slid between themattress 2482 and the foundation 2484 to a variety of lateral positions.A foundation may include any structure that the mattress 2482 may restupon including the floor. For example, the foundation may include aframe, springs and/or other structure suitable for supporting themattress 2482.

Although, as illustrated, the arm 2474 of apparatus 2470 is fixed, otherembodiments may include an arm that is adjustable to a plurality ofpositions with or without adjusting the position of base 2472. Forexample, the arm 2474 may be telescoping such that the elevation of thereceiving member 2476 may be adjusted to any of a plurality of positionswhere the plurality of positions are at different elevations relative toone another. Further, the arm 2474 may be attached to the base 2472 in amanner that allows the arm to be pivoted and to be rotated about thepoint of attachment. According to one embodiment, the arm 2474 or aportion thereof is rotatable about a point of rotation located somewherefrom the proximate end 2473 to the distal end 2475 of the arm 2474. Inthis embodiment, the arm 2474 may be adjustable to a plurality ofpositions through a substantially arcuate movement that allowssimultaneous adjustment of both elevation and lateral position of thereceiving member 2476. Alternate embodiments can provide an adjustmentbased on a primarily linear movement or a combination of linear andarcuate movement.

Thus, various embodiments provide an apparatus 2470 adapted to allow thereceiving member 2476 to be moved through a plurality of positions inany direction. According to one embodiment, any combination of positionadjustments may be made to the receiving member (for example, 360degrees of movement relative to the then current position of thereceiving member 2476).

The receiving member 2476 may include any of a variety of structureprovided that the receiving member 2476 is configured both to securelyand removeably receive the control device 2404. For example, in oneembodiment, the apparatus 2470 includes a strip of hook and loopfasteners (i.e., VELCRO) that may be affixed either on or adjacent tothe inflatable device. According to one embodiment, a vertical strip ofhook and loop fasteners is attached to bedding within reach of the user.Such a strip of hook and loop fasteners may, in various embodiments, befixed in alternate positions, for example, horizontally, diagonally,etc. either on or adjacent to the inflatable device. Further to theseembodiments, the control device 2404 is provided with a correspondingset of hook and loop fasteners such that it may be placed in engagementwith the apparatus 2470 to locate the control device 2404 proximate theinflatable device. In other embodiments, the apparatus 2470 includespins, clamps, buttons, snaps or other fasteners suitable for securingthe apparatus with a receiving member 2476 including a hook and loopfastener (or other structure) adjacent to the inflatable device. Theseembodiments may provide an embodiment of the apparatus 2470 where theplurality of locations are included along a strip of hook and loopfasteners.

The apparatus provides further advantages for the user of an inflatabledevice. For example, in one embodiment, the apparatus 2470 is configuredto locate the handheld control device with respect to the inflatabledevice to be within reach of the user while the user is reclined on aninflatable device without the user adjusting from a reclined posture andwithout the user removing the control device 2404 from the receivingmember 2476. In yet another embodiment, the apparatus 2470 is employedwith an inflatable device that includes posture control. According toone embodiment, the apparatus 2470 is configured to locate the handheldcontrol device with respect to the inflatable device to be within reachof the user while the user remains reclined on an inflatable devicewithout the user adjusting a posture setting of the inflatable deviceand without the user removing the control device 2404 from the receivingmember 2476.

Various embodiments of the apparatus 2470 may be employed to locate avalve (or other means of manual adjustment of the inflation level in aninflatable device) within reach of the user while the user employs theinflatable device, for example, without the user adjusting from areclined position. According to one embodiment, the apparatus 2470 isemployed with valve connected to the inflatable device by a conduit.According to this embodiment, the apparatus 2470 may include thepreviously-illustrated base 2472 and arm 2474 with a receiving member(e.g., the receiving member 2476) configured to receive and removablysecure the valve.

According to one embodiment, the base 2472 is configured to secure theapparatus 2470 adjacent the inflatable device. In one embodiment, thearm 2474 projects substantially perpendicular from the base 2472.Further, in one embodiment, the receiving member 2476 is located at thedistal end 2473 of the arm 2474 while the proximate end 2475 isconnected to the base 2472. It should be recognized that the receivingmember 2476 need not be located at the distal end 2473 but may insteadbe located at any other position along the length of the arm 2474. Invarious embodiments, the receiving member 2476 is configured to allowthe secure storage of the control device 2404 while also facilitatingeasy attachment and removal of the control device 2404 to and from,respectively, the apparatus 2470.

Various embodiments of the invention may include a receiving member 2688as illustrated in FIG. 26A. The receiving member 2688 may be employedwith a variety of control devices 2604, for example, wireless controldevices or hardwired control devices. The receiving member 2688 may beconfigured to receive a control device 2604 in any of the previouslydescribed configurations or combinations thereof.

As previously described herein, the control device 2604 may include apower source. Further, the power source may be a battery power sourcewhich may include rechargeable batteries or non-rechargeable batteries.According to one embodiment, the receiving member 2688 is employed witha hardwired control device 2604 and the receiving member 2688 is notconnected to a source of external power. Alternatively, the receivingmember 2688 may be connected to an external power source that isemployed to recharge a rechargeable power source integral to the controldevice 2604 (e.g., trickle charge). For example, the receiving member2688 may be connected to an external 120 volt power source which isconverted by recharging circuitry 2698 to a voltage and current suitablefor recharging a power source integral to the control device 2604 whenthe control device 2604 is received by the receiving member. Further,the recharging circuitry 2698 may include either or both of powerconversion circuitry and current limiting elements. According to oneembodiment, the recharging circuitry includes one or more of atransformer and rectifier. In a further embodiment, the rechargingcircuitry 2698 is located external to the receiving member 2688, whilein an alternative embodiment, the recharging circuitry 2698 is includedas a part of the receiving member 2688. In a further embodiment, areceiving member 2688, which is connected to an external power source,is employed with a hardwired control device that does not requirerecharging. In other words, the available recharging circuitry may beprovided but not used, or may not be included at all.

The receiving member 2688 may be employed in various configurations. Forexample, in one embodiment, the receiving member 2688 may be includedwith the apparatus 2470 for storing a control device as previouslydescribed with reference to FIGS. 24A through 25B.

Other features of the control device 2604 were previously describedherein. For example, the control device may include a user interface2661 that includes a plurality of control elements 2662. Further, thecontrol device 2604 may include a housing 2660 that is configured forhandheld use. According to the embodiment illustrated in FIG. 26A, thecontrol device 2604 includes a rim 2691 with a surface 2695 that slopesradially inward from the rim towards the control elements 2695. A firstset of control elements 2662B, 2662C, 2662D, and 2662E may be includedat the radially inward end of the surface 2695. As illustrated in theembodiment shown in FIG. 26A, a centrally located control element 2662Amay be included in a further recessed surface 2696. According to oneembodiment, the overall configuration of the control device 2604 and thehousing 2660 recess the control elements 2662 to help prevent accidentaladjustments to the inflation level of the inflation device that thecontrol device 2604 is employed with.

Referring now to FIG. 26B the receiving member 2688 is illustrated withthe control device 2604 removed from it. In the illustrated embodiment,the receiving member 2688 includes a base 2690 and a sidewall 2692connected to a periphery of the base 2690. In various embodiments, theheight of the sidewall 2692 may vary relative to the base 2690 while insome embodiments the sidewall 2692 may include a more uniform height.The overall configuration of the sidewalls 2692 and base 2690, in theillustrated embodiment, define a recess that is configured to retain thecontrol device 2604 and in particular, the housing 2660 when it isreceived by the receiving member 2688. Further, the sidewalls eitheralone or in combination with other structure not illustrated may providea surface 2697 on which the receiving member 2688 rests when it isplaced on, for example, a flat surface. In some embodiments, thereceiving member 2688 may include additional structure or hardware thatallow the receiving member 2688 to be attached to the apparatus 2470 asdescribed previously with reference to FIGS. 24A through 25B.

Additional structure may be provided as part of the receiving member2688 to help secure and properly align the control device 2604 whenreceived by the receiving member 2688. For example, the receiving membermay include tabs 2694 or projections 2693 or some combination of theseand/or other structural features to accomplish the purpose of properlyaligning and releasably securing the control device 2604 to thereceiving member 2688. In the illustrated embodiment, the tab 2694projects inward from the sidewall 2692. In a version of this embodiment,the control device 2604 includes a corresponding receptacle which mateswith the tab 2694 when the control device 2604 is properly aligned andpositioned within the receiving member 2688.

In the illustrated embodiment, the receiving member 2688 includeselectrical receptacles 2692A and 2692B that are configured to locate oneor more electrical contacts employed in connecting the control device2604 to the recharging circuitry 2698 to recharge a power source locatedin the control device 2604. For example the receptacle 2692A and 2692Bmay be connected to recharging circuitry and an external source of poweras previously described. In various embodiments, the control device 2604will include corresponding structure and/or corresponding electricalcontacts to mate with electrical contacts provided in the receptacles2692A and 2692B to complete a recharging circuit when the control device2604 is properly aligned and set in the receiving member 2688. Theelectrical contacts may include any of a variety of structure well knownby those of ordinary skill in the art including male and female pins,flat contact surfaces, etc. The projections 2693 may be employed toproperly align the control device 2604 in the receiving member 2688.This function may include alignment and control of the depth ofpenetration of elements of the control device 2604 that extend into thereceptacles 2692A, 2692B when the control device 2604 is received by thereceiving member 2688. In other words, the protrusions 2693 may providestructure that controls a contact engagement and/or penetration betweenthe electrical contacts included in the receiving member 2688 and thecontacts included in the control device 2604.

Referring now to FIG. 27, there is illustrated one embodiment of acontrol device 2730 that can be used with a fluid controller and aninflatable device according to an embodiment of the invention, forexample, the control device 2730 may be employed with the pressurecontroller 206 described herein. It is to be appreciated that oneembodiment of an inflatable device can include a substantially fluidimpermeable bladder and a fluid controller that comprises anelectrically powered pump at least partly positioned within bladder,such as disclosed herein with reference to FIG. 20 and in applicant'sU.S. Pat. No. 5,267,363. In addition, embodiments of the control device2730 may be employed with systems such as the systems 100 and 200described herein with reference to FIGS. 1 and 2, respectively. Further,embodiments of the control device, for example, control devices 604,804, 2204 and 2604 may include one or more features of the controldevice 2730 or at least the functionality of the control device 2730described herein.

The bladder may be constructed in any manner and of any material(s)capable of retaining a desired fluid under a degree of pressurenecessary for its intended application. For example, the bladder may beconstructed of a substantially fluid impermeable barrier and may beshaped in accordance with its intended use. Where bladder is intendedfor use as a mattress, bladder may be constructed in the shape andthickness of a conventional mattress. For example, the inflatabledevices may include a mattress as illustrated in FIGS. 1-3, 23A and 23B.

The following aspects of embodiments of bladders may be included invarious embodiments of the chambers and the bladders described herein(e.g., the chamber 110, the bladder 2362, etc.). For example, thebladder may include internal structure, such as ribs or partitions. Forexample, the bladder may be divided into two or more separate fluidcontaining compartments. The bladder may also include internal structureto control the movement of fluid within the bladder. For example, thebladder may include baffles or walls within the bladder to improve theflow of fluid when the bladder is inflated or deflated.

A wall of the bladder may be any thickness required to substantiallycontain a fluid under pressures at which the bladder will be used. Athickness of the wall of the bladder (e.g., the bladder 2362) may dependupon material from which the bladder is constructed. For example, moredurable or elastic materials may not require the wall of the bladder tobe as thick as a wall-thickness employed with less durable or elasticmaterials. Typically, the wall of the bladder may be 4-16 mils thick forpolyvinyl chloride (PVC) film and polyurethane materials.

The bladder may be constructed of any material or materials capable ofsubstantially containing a fluid and forming a bladder strong enough towithstand a pressure at which the bladder (e.g., the bladder 2362) is tobe used. For example, the bladder may be constructed of a polymericmaterial, such as a thermoplastic. The bladder may be constructed from arelatively inexpensive, easy to work with and durable material. Someexample materials include polyvinyl chloride (PVC) film and polyester.The manner of making the bladder may depend on its material ofconstruction and configuration, as will be recognized by one of ordinaryskill in the art.

The bladder may include additional materials to improve the utility andcomfort of the bladder. For example, the bladder may include outerlayers or coatings for durability, support or comfort. In someembodiments, the bladder may be coated with a material that is morepleasant to the touch than the material from which bladder isconstructed. Where an inflatable device is for use in supporting aperson, the bladder may also include a layer to provide additionalcomfort, particularly where the person is to contact the bladder. Forexample, the bladder may include a comfort layer. The comfort layer maybe located on any surface of the bladder that may come into contact witha user of inflatable device. The comfort layer may improve the textureand feel of the bladder and, further, may allow air and moisture to passbetween a person and the bladder, to prevent discomfort.

The fluid controller may be constructed in any manner and using anymaterials that allow fluid controller to control the flow of fluid intoand/or out of the bladder. In one embodiment, fluid controller includesa pump that may be constructed in any manner and using any materialsthat allow it to inflate and/or deflate the bladder. For example, thepump may be a conventional fluid pump including a motor that drives animpeller moving air into, or out of, the bladder. Where the pumpincludes a motor, the motor may be powered by electricity. Electricitymay be provided by a connection to standard house current or, whereportability is desired, by batteries. Other types of pumps, such asdiaphragm pumps, may also be used so long as they allow the pump toinflate the bladder to within a desired pressure range, which mayinclude a pressure range that can be adjusted by, for example, byanother fluid pumping device, such as someone blowing into aconventional valve stem within the bladder, a foot pump, and the like.

The fluid controller may direct fluid flow in any manner consistent withits construction. For example, where the fluid controller includes apump with a motor and an impeller, the impeller may draw fluid into, orout of, the bladder through a conduit. According to one embodiment,where a pump is included in fluid controller, the pump is able toinflate bladder in a relatively short time period, for example, lessthan a minute to inflate an inflatable mattress. The pump may bedesigned to include an appropriately powerful fluid moving mechanism toachieve a desired pumping time to fill a particular inflatable device.The pump also may be small and consume as little power as possible. Lowpower consumption is particularly desirable where the pump is to bepowered by batteries, as it may extend battery life. The pump may alsobe configured for quiet (e.g., low noise) operation. A balance ofpumping capacity, size, power consumption, noise generation and cost maybe selected for a particular application as will be recognized by thoseof skill in the art.

The fluid controller may be constructed of any material or materialsthat allow it to function as desired. Typical materials of constructionof the various components of fluid controller will vary with the natureof fluid controller and any pump and are known to those of skill in theart. For example, the fluid controller may include some parts that aremanufactured from rigid material and other parts that are manufacturedfrom flexible and/or resilient material.

According to one embodiment, the fluid controller may be connected tothe bladder in a manner that allows a pump to supply the bladder withfluid, inhibits undesired escape of fluid from bladder and does notinterfere with the use of bladder. For example, the inflatable devicemay be constructed with at least a portion of fluid controllerpositioned within bladder. Where the fluid controller is positioned atleast partially within bladder, the fluid controller will not interferewith the use of the inflatable device. In one embodiment, the exteriorprofile (total volume and shape) of the fluid controller and inflateddevice in combination are essentially the same as the exterior profileof the inflated device absent the combination, thus reducing theopportunity for the fluid controller to impact or interfere with the useof inflatable device. For example, where the fluid controller is locatedsubstantially within the bladder in a mattress application, it allows aninflatable standard sized mattress to fit into a standard sized bedframe. Where the fluid controller is located within the bladder, it maybe sized such that it will not come into contact with the bladder whenthe bladder is inflated, except at the point(s) of connection.

Where at least a portion of the fluid controller is positioned withinthe bladder, it may be connected to the bladder in any manner that willnot interfere with the use of the inflatable device or allow anundesired escape of fluid from the bladder. For example, the bladder maybe adhered or sealed to a portion of the fluid controller, such as withan adhesive or a heat seal. In one embodiment, an outlet of the fluidcontroller is sealed to the bladder. The bladder may also includestructure to facilitate the connection between the bladder and the fluidcontroller. The fluid controller may be positioned within the bladder ina variety of ways.

According to one embodiment, there is a need to reduce the cost andsimplify the mechanism for operating the fluid controller. The fluidcontroller may also include a device for controlling an operation offluid controller, such as the control device 2730 (or, for example, anyof control devices 604, 804, 2204, 2404 and 2604). The control device2730 may be separate or separable from the fluid controller to allow thefluid controller to be controlled remotely. In one embodiment, thecontrol device 2730 is a hand-held device for controlling the fluidcontroller. In a further embodiment, the dimension L is less than orequal to 3.75 inches. The control device 2730 may be physicallyconnected to the fluid controller by a cord 2731. Alternatively, thecontrol device 2730 may wirelessly communicate with the fluidcontroller.

The control device 2730 may include a variety of structure forcontrolling the operation of the fluid controller. For example, controlmay include a conventional power switch that energizes and de-energizesa pump within the fluid controller. The switch may be any of the manywell-known mechanisms for selectively connecting two conductors tosupply electricity to a point of use. The switch may allow the pump tobe energized such that it inflates bladder. The control device 2730 mayalso include structure that directs the deflation of bladder. Forexample, a second switch or a multi-function switch may reverse thedirection of the pump to deflate bladder. In some embodiments, the fluidcontroller may incorporate a valve, such as a self-sealing valve, whichmust be opened to allow deflation of bladder as well as inflation of thebladder. In these embodiments, the control device 2730 may also includestructure to initiate an operation to mechanically orelectro-mechanically open a valve to allow deflation of bladder. Forexample, the switch may act upon or energize a mechanical openingmechanism or activate a solenoid to open a valve and allow deflation ofbladder. In one embodiment, the valve that is opened is a self-sealingvalve, meaning that it is held closed, at least in part, by pressurewithin the bladder. For example, a self sealing valve may include adiaphragm that is urged against a valve seat by fluid pressure fromwithin the bladder. Optionally, the switch may also energize the pump towithdraw fluid from the bladder.

In the embodiment of FIG. 27, the control device 2730 operates in thefollowing manner. A control element 2732 is configured to normally restin a center position 2734. According to one embodiment, the controlelement 2732 is configured to travel laterally to the left and/or to theright relative to the center position 2734 as illustrated by the arrow.With the control element 2732 located in the center position 2734, thefluid controller is off, such that neither the pump nor anyelectromechanical device are operating in accordance with oneembodiment. The control element 2732 is also configured so that it canbe moved to the right to a first position 2735. In accordance with oneembodiment, the control element 2732 in the first position 2735, themotor of the fluid controller is activated to provide air to the bladderthrough the fluid controller so long as the control element 2732 is heldin the first position 2735. Thus, the user can provide air to thebladder to, for example, increase the firmness of the inflatable deviceby maintaining the control element 2732 in the first position 2735.According to a further embodiment, the control element 2732 is alsoconfigured so that it can be moved further to the right where it may belocked into place in a second position 2736 so that the user need nothold the control element 2732 in the second position 2736 to, forexample, inflate the inflatable device. In one embodiment, the fluidcontroller will continue to provide air to the bladder until the usertaps or otherwise shifts the control element 2732 out of a locked secondposition 2736. In accordance with one embodiment, the control element2732 will automatically return to the center position 2732 as describedabove when it is released from the second position 2736. In anotherembodiment, the fluid controller can be provided with a timing circuitso that the fluid controller and motor will be shut off after apre-determined period of time during which the control element 2732remains in the second position 2736. An approach similar to thepreceding may employ a timing circuit to automatically stop theinflation even with the control element 2732 held in the second position2736 by the user.

In accordance with one embodiment, the control element 2732 is alsoconfigured so that it can be moved to the left to a third position 2737and to a fourth position 2738. In one embodiment, the third position2737 and the fourth position 2738 each correspond to a deflation of theinflatable device or a bladder included therewith. In one embodiment,with the control element 2732 held in the third position 2737, thesolenoid or electromechanical device is activated to open theself-sealing valve while the motor of the fluid controller is notactivated so long as the control element 2732 is held in this thirdposition 2737. Thus, the user can adjust air level in the bladder, forexample, to make the inflatable device softer. In accordance withanother embodiment, the control element 2732 is locked into place whenit is moved to the fourth position 2738. According to one embodiment,the pump will be activated so as to remove air from the bladder with thecontrol element 2732 locked in the fourth position 2738 so that the userneed not hold the control element 2732 while deflating the inflatabledevice. The use of the pump during deflation can result in a more rapiddeflation of the inflatable device. In the fourth position 2738, thefluid controller will continue to remove air from the bladder until theuser taps or otherwise moves the control element 2732 out of the fourthposition 2738, in which case it will automatically return to the centerposition 2734, as described above. In another embodiment, the fluidcontroller can be provided with a timing circuit so that the fluidcontroller and motor will be shut off after a pre-determined period oftime during which the control element 2732 is in the fourth position2738.

Various embodiments may also employ a timing circuit during deflation,for example, to de-activate the solenoid or electromechanical device todisengage with the valve after a pre-determined period of time. That is,a timing circuit may be employed to automatically stop the deflationafter a pre-determined period of time even with the control element 2732held in the second position 2735 by the user.

In addition to the preceding, various embodiments of the control 2730may include pressure control that employs a pressure sensed inside thebladder of the inflatable device to operate the valve and/or the pumpand stop an inflation or deflation when a predetermined pressure isreached.

It is to be appreciated that the control device 2730 can include anymeans, known to one of skill in the art, for maintaining the controlelement 2732 in the center position 2734 absent an outside force appliedto the control element 2732. It is also to be appreciated that theabove-described control 2730 can include any means, known to one ofskill in the art, for maintaining the control element 2732 in either thesecond position 2736 or the fourth position 2738 absent an outside forceapplied to the control element 2732 for example, a detent, spring and/orlatch may be employed. It is further to be appreciated that the abovedescribed control device can include any means, known to one of skill inthe art, for moving the control element 2732 to the center position 2734from either the first position 2735 or the second position 2737 absentan outside force applied to the control element 2732.

Referring now to FIG. 28A, a control device 2840 is illustrated inaccordance with another embodiment. FIG. 28B illustrates a profile ofthe control device 2840 including the user interface 2846. In theillustrated embodiment the control device is connected to a pressurecontroller (not illustrated) via a cord 2841. In various otherembodiments, however, the control device 2840 may interface with thepressure controller (e.g., the pressure controller 206) via wirelesscommunication. The control device 2840 includes a first control element2842A and a second control element 2842B and a plurality of indicatinglights 2844. In accordance with one embodiment, the indicating lights2844 are disposed in a linear arrangement where a location of theindicating lights is identified on the user interface 2846. According tothe illustrated embodiment, each of the plurality of indicating lightscorresponds to a level of inflation of an inflatable device (e.g., theinflatable device 102) with which the control device 2840 is employed.Where, for example, the indicating lights 2844 are each associated witha particular pressure of the inflatable device, the light correspondingto the selected inflation level is illuminated and may remainilluminated so long as the pressure is maintained. In anotherembodiment, the indicating light is only illuminated when the associatedlevel of inflation is selected by the user (by, for example, operationof the control elements 2842A and 2842B).

The plurality of indicating lights 2844 can be arranged in a sequencefrom a minimum inflation level (e.g., the indicating light 2844C) to amaximum inflation level (e.g., the indicating light 2844A). Further, oneor more indicating lights associated with a level of inflation betweenthe minimum and the maximum can be located between the indicating lights2844A and 2844C, for example, the indicating lights 2844B and 2844D. Inthe illustrated embodiment, the indicating light 2844B is associatedwith a level of inflation that is substantially midway between theminimum level of inflation and the maximum level of inflation. Inaccordance with one embodiment the pressure settings corresponding toeach of the plurality of indicating lights are predetermined by themanufacturer. Further, the user interface 2846 may include text adjacentone or more of the indicating lights that identifies a level of firmnessassociated with the indicating light. For example, the illustratedembodiment identifies the indicating light 2844A, 2844B and 2844C as“ExtraFirm,” “Medium” and “SuperSoft,” respectively.

In accordance with one embodiment, a user can depress or otherwiseactivate the first control element 2842A to increase an inflation levelin the inflatable chamber (e.g., the inflatable chamber 110). Inaddition, the user can activate the second control element 2842B todecrease an inflation level in the inflatable chamber. The controldevice 2840 may also provide a plurality of functions associated witheach of the two control elements 2842A, 2842B, respectively. Forexample, the control device 2840 may provide for inflation adjustmentusing either or both of a press and hold feature and by a temporaryoperation of the control elements 2842A, 2842B. In one embodiment, thefirst control element 2842A may be pressed to activate a pump to beginto inflate the inflatable device and then held for a minimumpredetermined amount of time after which the pump remains on even afterthe user releases the first control element 2842A. In one embodiment,the pump remains on until a predetermined pressure is reached in theinflatable device, e.g., a factory set maximum pressure. In an alternateembodiment, a pressure setting need not be employed, instead the pumpwill operate to inflate the inflatable bladder for a predeterminedamount of time after the first control element 2842A is used to activatethe press and hold feature. The amount of time that the control element2842A should be held to “latch” the pump in an on-state may vary,however, the control element 2842A must be held for a minimum of twoseconds to do so in one embodiment.

In addition to the preceding, the control element 2842A can be tapped(i.e., briefly activated) by the user to incrementally increase thepressure in the inflatable device. For example, when the pressure is setaccording to the second indicating light 2844B the user may increment ortap the first control element 2842A a first time to increase thepressure of the inflation level in the chamber to a pressure (e.g., afirmness level) associated with the indicating light 2844D. When thepressure reaches that associated with the indicating light 2844D,another tap of the control element 2842A will adjust the pressure tothat associated with an indicating light 2844E.

The second control element 2842B can be employed in a similar fashion tothat described concerning the control element 2842A. That is, thecontrol element 2842B can be depressed or otherwise activated todecrease the pressure in the inflatable device in one or more steps. Inone embodiment, the second control element 2842B may be pressed toactivate a pump to begin to deflate the inflatable device and then heldfor a minimum predetermined amount of time after which the pump remainson even after the user releases the second control element 2842B. In oneembodiment, the pump remains on until a predetermined pressure isreached in the inflatable device, e.g., a factory set minimum pressure.In an alternate embodiment, a pressure setting need not be employed,instead the pump will operate to deflate the inflatable bladder for apredetermined amount of time after the second control element 2842B isused to activate the press and hold feature. In accordance with oneembodiment, the second control element 2842B may be pressed and manuallyheld to allow the pump to assist in fully deflating the inflatabledevice. In a version of this embodiment, operation of the pump can bestopped by the user momentarily tapping the second control element2842B.

One of ordinary skill in the art will recognize that the controlelements 2842A and 2842B need not be discrete elements but instead maybe integrated into a single control element that may, for example, be“rocked” from a neutral position to a first position to activate theabove-described features associated with the control element 2842A and asecond position to activate the above-described features associated withthe control element 2842B.

FIG. 29 is a sectional view of yet another embodiment of a pressurecontroller 2906. In the illustrated embodiment, the pressure controlleris employed with a multi-layer inflatable device 2902 (e.g., amattress). In accordance with one embodiment, the inflatable device is amattress suitable for sleeping two users. Accordingly, in theillustrated embodiment, the inflatable device 2902 includes a firstchamber 2910A, a second chamber 2910B, a third chamber 2910C and afourth chamber 2910D where the first chamber 2910A is an upper chamberlocated above the third chamber 2910C (i.e., a lower chamber) and thesecond chamber 2910B is an upper chamber located above the fourthchamber 2910D (i.e., a lower chamber). In accordance with oneembodiment, each of the upper chambers 2910A and 2910B are substantiallyaligned with and overlay the corresponding lower chambers 2910C and2910D, respectively. The pressure controller 2906 can be locatedanywhere within the vicinity of the inflatable device 2902 provided thatit is fluidly coupled to the inflatable device.

According to one embodiment, the pressure controller 2906 and inflatabledevice are configured to provide increased comfort-control to a user. Inparticular, Applicant finds that independent control of the pressure(i.e., firmness) within each of an upper chamber and an underlying lowerchamber can provide a user with the ability to maintain a desired levelof support (soft, semi-soft, firm, extra-firm) through a plurality ofposture settings. In general, a posture setting allows a user to adjustan angle between one or more elements of the user's anatomy relative toanother element of the user's anatomy. For example, assuming a fullyreclined posture as a starting point, a first posture setting may placeone or more of a users head, neck, back, legs, or some combination ofthe preceding at a different angel relative to the position of one ormore of the others when the user is fully reclined. That is, a change inposture can be effected by moving the legs while the head and torso aresubstantially stationary. Alternatively, the legs may be moved while thetorso and/or head remain stationary. Further, the relative movement ofone element of the user's anatomy relative to another element of theuser's anatomy may be varied in a range of different posture settings asthe angle between the anatomical elements is incrementally adjusted.

In one embodiment, the torso and the legs of a user are in a firstposition relative to one another (for example, in the same plane) withthe inflatable device in a first posture setting (e.g., horizontal). Ina further embodiment, the torso and the legs are in a second positionrelative to one another (for example, at a first angle less than 180degrees) with the inflatable device in a second posture setting.According to this embodiment, the torso and legs are in a third positionrelative to one another (for example, at a second angle less than 180degrees) with the inflatable device in a third posture setting.

In accordance with one embodiment, the pressure controller 2906 includesa valve 2916A, 2916B, 2916C, and 2916D and associated conduit 2912A,2912B, 2912C and 2912D that fluidly couple each of the chambers 2910A,2910B, 2910C and 2910D, respectively, to the pressure controller 2910.Further, in various embodiments, the pressure controller 2906 includes apump 2908, although in alternate embodiments, the pump 2908 may befluidly coupled to but external to the pressure controller 2906.

In a further embodiment, a system including the pressure controller 2906includes a control device 2904 to provide the user with a convenientmeans of adjusting the pressure in any of the chambers. Thus, a user ofthe inflatable device 2902 may adjust the pressure of any of thechambers alone or in combination with another chamber. According to oneembodiment, in operation, the user may control the firmness of the firstchamber 2910A while in a horizontal posture. The user may further adjusttheir posture by adjusting the pressure in the third chamber 2910C. Inaccordance with a further embodiment, the pressure controller isconfigured to rapidly move a relatively large amount of fluid eitherinto or out of the third chamber 2910C to provide for posture control(e.g., to provide a plurality of posture settings).

As described herein, the control device 2904 is tethered to theinflatable device 2902 in accordance with one embodiment, while inanother embodiment, the control device 2904 communicates wirelessly withthe pressure controller 2906.

In various embodiments, the user need not know whether the pressure isbeing adjusted in the upper chamber, the lower chamber or both chambersto achieve a desired firmness and/or posture of the inflatable device.For example, the user may select a desired firmness and/or posturesetting to which the pressure controller responds by making any requiredadjustments to the inflation level of the chambers in the inflatabledevice. The preceding approach allows a user to select a desiredfirmness and or posture without manually adjusting a firmness in one ormore chambers.

In accordance with one embodiment, the pressure controller 2906 isconfigured to simultaneously adjust the pressure level in a plurality ofchambers. As some examples, the pressure controller may simultaneouslyadd fluid to each of the first chamber 2910A and the third chamber2910C, simultaneously release fluid from each of the first chamber 2910Aand the third chamber 2910C, simultaneously add fluid to three or morechambers or simultaneously release fluid from three or more chambers.

In various embodiments, a system can include, along with the pressurecontroller 2906, pressure and temperature sensors to sense temperatureand pressure in one or more of the chambers 2910A, 2910B, 2910C and2910D. According to one embodiment, the pressure sensors and thetemperature sensors are included in the pressure controller, the sensorsbeing in communication with the chambers, while in an alternateembodiment the sensors are not located in the pressure controller 2906.For example, in one embodiment, the pressure sensors may be located in afluid conduit that fluidly couples the pressure controller and thechamber with which the pressure sensor and temperature sensor areassociated, e.g., within the fluid conduits 2912A, 2912B, 2912C and2912D.

FIG. 30A illustrates an embodiment of a pressure controller 3006 inaccordance with one embodiment while FIG. 30B illustrates a crosssection A-A. The pressure controller includes the first valve 2916A, thesecond valve 2916B, the third valve 2916C and the fourth valve 2916D. Inaddition, the pressure controller also includes a valve operator 3020(e.g., a motor, a solenoid, etc.), a mechanical coupling 3022 (shown ina retracted position and in phantom in an extended position), a gear3028 (e.g., a toothed gear) to connect the valve operator 3020 to themechanical coupling 3022, a cam shaft 3023 and a cam 3021. In oneembodiment, the preceding components are included in a housing. In aversion of this embodiment, electronic circuitry adapted to processcontrol signals for the pressure controller 3006 is also included in thehousing.

In a further embodiment, the pressure controller 3006 includes aseparate mechanical coupling for each valve, that is, the mechanicalcouplings 3022A, 3022B, 3022C and 3022D. In addition, the pressurecontroller 3006 may also include a separate cam 3021A, 3021B, 3021C and3021D for each valve 2916A, 2916B, 2916C and 2916D, respectively, whereeach cam is operated by a common cam shaft 3023. In a version of thisembodiment, each cam includes a plurality of lobes 3025. In a furtherembodiment, an electronic sensor is employed to sense a position of thecam shaft. The pressure controller 3006 may also include a separate gear3028A, 3028B, 3028C and 3028D associated with each of the mechanicalcouplings 3022A, 3022B, 3022C and 3022D, respectively where all of thegears are driven off of a single gear shaft 3027.

In accordance with one embodiment, a cam operator 3029 (e.g., a motor, asolenoid, etc.) is also included in the pressure controller 3006. Inoperation, a signal to change a pressure/inflation level in one or morechambers is received by the pressure controller 3006. The cam operator3029 operates to rotate the cam shaft 3023 such that the cam associatedwith the selected chamber is rotated into a position whereby thecorresponding mechanical operator is engaged with the correspondinggear. For example, if the pressure controller receives a signal tochange the fluid pressure in the second chamber 2910B, the cam 3021B isrotated such that one or more of the lobes 3025 engage the mechanicalcoupling 3022B to force the mechanical coupling into engagement with thegear 3028B. The valve operator 3020 also operates to rotate the gearshaft 3027 to move the mechanical coupling (e.g., the mechanicalcoupling 3022B) into engagement with the valve (e.g., the valve 2916B)to open the valve. In one example, the pump (e.g., the pump 2908)operates to force fluid into the chamber. In other modes of operation,the pump may be off when the valve is opened such that air exhausts fromthe chamber through the valve. In another mode of operation, the chambermay be more rapidly deflated with the valve open and the pump operatedin a direction that forces fluid out of the chamber.

As mentioned above, a plurality of valves may be opened simultaneouslyto simultaneously adjust the pressure in a plurality of chambers. Inaccordance with one embodiment, the cams 3025 provide six lobes 3025that are equally spaced around the outside diameter of the cam 3025(e.g., they are 60 degrees apart) such that the pressure controller 3006can operate any one of up to four separate valves independent of theoperation of the other valves or can simultaneously operate two valves.

Referring now to FIG. 31, a valve 3116 for use with an inflatable deviceis illustrated in accordance with one embodiment. The valve may includea shaft 3131 either integral to the valve 3116 or attached thereto. Infurther embodiments, the shaft may include a latch 3141, and anengagement tab 3143. Further, in accordance with the illustratedembodiment, the shaft 3131 can include a head 3148 which provides aregion of the shaft having a larger diameter than the region of theshaft to which it is attached. In accordance with one embodiment, thehead 3148 is located at an end of the shaft 3131. The valve can alsoinclude a diaphragm 3147 and a valve housing 3117. In one embodiment,the diaphragm 3147 engages the valve housing 3117 when the valve 3116 isin the sealed position. In accordance with one embodiment, the valveincludes a valve seat 3157 which is constructed to engage at least aportion of the diaphragm 3147.

In the illustrated embodiment, the valve 3116 is employed to provide aseal between a chamber 3160 that receives fluid from a pump and aninflatable bladder 3162. According to one embodiment, the fluid is airand the pump is an air pump. According to some embodiments, the chamber3160 receives fluid discharged from a pump which can supply fluid to aplurality of valves such as the valve 3116. In one embodiment, theplurality of valves are each fluidly coupled to a respective fluidchamber or chambers. Further, a single valve or a plurality of valvescan be included with the pump in a fluid controller employed to controlthe fluid pressure in each of the respective fluid chambers. In afurther embodiment, the fluid controller is employed to controlinflation of an inflatable device. According to one embodiment, thefluid controller is located in a profile of the inflatable device. In afurther embodiment, the fluid controller is located within a profile ofan inflatable chamber.

In some embodiments, fluid pressure in the chamber 3160 is generallydirected at the valve 3116 in the direction A while pressure within theassociated fluid chamber 3162 is generally directed at the valve in thedirection C. According to one embodiment, the chamber 3160 is a plenumcommon to each of a plurality of valves, e.g., the valve, 3116.According to this embodiment, the fluid controller can operate each ofthe valves together or separately to inflate or deflate the associatedchambers together or separately.

In accordance with one embodiment, the valve 3116 is mechanically biasedclosed and remains closed under a fluid bias. FIG. 31 illustrateselements of a mechanical system (e.g., an electromechanical system) toopen and close the valve 3116. In accordance with the illustratedembodiment, the elements include a cam 3123, a lobe (e.g., a projectionfrom the cam) 3125, a first spring 3133, a second spring 3135 and a stop3137. In one embodiment, all of the illustrated components of valve andthe mechanical system are include in a pressure controller.

In general, in operation, the first spring 3133 provides a bias thatmaintains the valve in a sealed position and the second spring 3135provides a bias that positions the shaft in both latched and unlatchedpositions (as the shaft articulates to and from the sealed/unsealedpositions). In a version of this embodiment, the first spring 3133 isattached to the shaft 3131. In accordance with one embodiment, a singlespring may provide both a closing force and a latching force for thevalve 3116. To better describe the valve operation the valve isillustrated in the sealed and the unsealed position with the unsealedposition shown in phantom. Further, each of the first spring 3133 andthe second spring 3135 is illustrated in phantom where thephantom-position represents the position of the spring with the shaft inan unlatched position.

In a latched condition, the mechanical system may act to maintain thevalve in a sealed position in which it is prevented from moving to anunsealed position. The system may also place the valve in an unlatchedposition in which the valve is free to move from the closed position tothe opened position. In the interest of clarity, the shaft 3131 isillustrated in both the latched position and in the unlatched position(in phantom). Further, the engagement tab 3143 is also illustrated in aplurality of positions; a first position with the shaft 3131 in thelatched position and with the valve 3116 in the sealed position; asecond position with the shaft 3131 in the unlatched position with thevalve 3116 in the sealed position (both the shaft and the engagement tabare illustrated in phantom); and a third position with the shaft 3131 inthe unlatched position and the valve 3116 in the unsealed position (theengagement tab is illustrated in phantom).

In operation, the valve is sealed when the lobe 3125 is moved in adirection opposite the valve housing 3117, for example, if it is movedvia rotation of the cam 3123. In this position, the lobe does notprovide a bias on the shaft 3131 and/or the engagement tab 3143. Thelobe 3125 is illustrated in phantom with the valve in the sealedposition. With the valve in the sealed position, the second spring 3135provides a bias on the shaft 3131 while the first spring provides a biasthat draws the latch 3141 into engagement with the block 3137 (e.g., ona surface of the block that is opposite the valve 3116). To open thevalve, the cam rotates the lobe 3125 in a direction toward the valve3116. As the lobe 3125 travels toward the valve, it engages theengagement tab 3143. The rotation of the cam 3125 moves the lobe in anarc-shaped path which initially disengages the shaft 3131 from theblock. Once the shaft is unlatched, the continued rotation moves theshaft 3131 in the direction of the second spring 3135 while also movingthe shaft toward the valve and valve housing to unseal the valve. Thatis, the travel of the shaft is not entirely linear in some embodiments.

According to one embodiment, the valve 3116 includes a diaphragm support3149 and the diaphragm 3147 includes a first region 3151, a secondregion 3153 and a third region 3155. In one embodiment, the diaphragmsupport 3149 and the third region 3155 of the diaphragm are attached tothe head 3148 of the shaft 3131. In the illustrated embodiment, portionsof the diaphragm and the diaphragm support 3149 are placed in contactwith one another using a layered construction. In general, in variousembodiments, the diaphragm support 3149 is employed to either orboth: 1) add rigidity to at least a portion of the diaphragm; and 2) toattach or assist in attaching the diaphragm to the shaft 3131. In theillustrated embodiment, the diaphragm 3147 is attached to the head 3148.However, in some embodiments, the diaphragm 3147 can be attached to theshaft 3131 which does not include a head. For example, the diaphragm canbe attached to a region of the shaft (which may or may not be an end ofthe shaft) that is no larger in diameter than other regions of the shaft3131.

In some embodiments, the valve 3116 is constructed such that the valveseal is assisted by pressure on a first side of the diaphragm providedin the inflatable chamber to which it is coupled and/or by pressure on asecond side of the diaphragm provided from the pump. In variousembodiments, the seal provided by the valve is substantially fluid-tightwith or without the valve being subject to fluid pressure. In otherwords, the pressure maintained on the valve when in the latched positionis, in some embodiments, sufficient to prevent fluid from leaking fromone side of the valve to the opposite side of the valve.

According to a further embodiment, the valve includes a constructionthat allows for pressure provided on either the first side of thediaphragm or the second side of the diaphragm to assist in sealing thevalve closed. For example, where the valve is closed and latched, andfluid pressure is provided in the direction A, fluid pressure will alsobe directed in a generally radially outward direction (relative to theshaft 3131) in the direction B. The fluid pressure in the direction Bacts to press the diaphragm against the valve seat 3157. According tosome embodiments, all or a portion of the diaphragm is flexible. Inaccordance with an embodiment where at least the second region 3153 ofthe diaphragm is flexible, the fluid pressure in the direction of arrowB deflects the second region in the radially outward direction toincrease the strength of the seal between the second region of thediaphragm 3153 and the valve seat 3157. Further, fluid pressure on thevalve in the direction C can act on the diaphragm support 3149 toimprove the seal of the valve, for example, when fluid in the inflatablechamber (to which the valve is coupled) acts on the valve in thedirection which corresponds to the closed direction of the valve. Wherea flexible diaphragm is employed the force from the direction of arrow Ccan act to “mushroom” the region 3153 in a radially outward direction toimprove the valve seal.

According to some embodiments, all or a portion of the diaphragm 3147 isrigid. In some of these embodiments, the valve includes a constructionthat allows for pressure provided on either the first side of thediaphragm or the second side of the diaphragm to assist in sealing thevalve closed. For example, the fluid pressure can assist in maintaininga seal between a rigid diaphragm and the valve seat 3157. According toone embodiment, at least the first portion 3151 of the diaphragm isrigid.

In accordance with one embodiment, the approach illustrated in FIG. 31allows a single electromechanical device to act as both the valveoperator and cam operator, for example, to combine the functionality ofboth the valve operator 3020 and the cam operator 3029 of the systemillustrated in FIGS. 30A and 30B thereby employing only a singleelectromechanical device.

In accordance with one embodiment, a reversible motor rotates the cam3123 in both the clockwise and the counterclockwise direction. That is,the lobe 3125 (e.g., an arm) rotates counterclockwise to open the valveand clockwise to allow the valve to reseal and position the cam for asubsequent valve operation. In accordance with one embodiment, the lobe3125 is configured to be more rigid (e.g., stiffer) when rotating in thecounterclockwise direction and less rigid when moving in the clockwisedirection.

In various embodiments, the approach described with reference to FIG. 31can be employed to operate a plurality of valves, for example, thevalves 2916A, 2916B, 2916C and 2916D included in the pressure controller3006 of FIG. 30A. Further, a cam shaft may operate a plurality of cams(e.g., a plurality of cams 3123) each associated with a different valve.In one embodiment, a system includes the valve 3116 and associatedmechanical system and the plurality of cams are employed toindependently open four valves in four different operating states (e.g.,four different rotational positions of the cam shaft) and also tosimultaneously open two of the valves.

Referring now to FIGS. 32A-32C, an inflatable device 3202 including aplurality of inflatable chambers is illustrated. In accordance with oneembodiment, an upper chamber 3210A is located at a first level and alower chamber 3210B is located at a lower level where it supports thefirst chamber. Further, the inflatable device 3202 can be configured toprovide posture control for a user 3201. That is, in accordance with oneembodiment, the firmness of the inflatable device is primarilycontrolled by controlling the fluid pressure in the upper chamber whilethe pressure in the lower chamber is primarily controlled to adjust theposture of the user. Further, the controller may provide forsimultaneous adjustment of both upper and lower chambers to achieve arange of comfort, posture and/or support settings. The inflatable device3202 illustrated in FIGS. 32A-C may be employed with any of the pressurecontrollers described herein.

In accordance with one embodiment, the ability to control the firmnessand posture as described here is, at least in part, the result of adifference in a fully inflated thickness (i.e., a dimension N1) of theupper chamber 3210A and a fully inflated thickness (i.e., a dimensionN2) of the lower chamber 3210B. For example, in one embodiment, theupper chamber is thinner than the lower chamber. In a version of thisembodiment, the dimension N1 is in a range of from 2-4 inches and thedimension N2 is in a range of from 3-5 inches. In a further embodiment,the lower chamber is twice as thick as the upper chamber, for example,the lower chamber may be 5 inches thick and the upper chamber may be 2.5inches thick.

As illustrated in FIGS. 32A-32C, the posture control provides forvarious positions of elements of the user's anatomy relative to oneanother. For example, each of the user's torso, legs and head aresubstantially aligned along an axis X. However, following a postureadjustment provided by a change in pressure in either or both of theupper chamber and the lower chamber the positions of the torso, legs andhead are changed. The axes H, L and T are employed here for reference.In FIG. 32B, an angle between the L axis and the T axis is greater than90 degrees while in FIG. 32C the angle between the L axis and the T axisare approximately 90 degrees. Similarly, in FIG. 32B, an angle betweenthe H axis and the T axis is less than an angle between the H axis andthe T axis illustrated in FIG. 32C.

In accordance with one embodiment, changes in posture as illustrated inFIGS. 32A-32C can be accomplished by adjusting the pressure/inflationlevel in the lower chamber while maintaining the pressure/inflationlevel in the upper chamber. For example, the change in posture betweenthe posture illustrated in FIG. 32A and the posture illustrated in FIG.32B may be accomplished by reducing the pressure in the lower chamber.Similarly, the change in posture between the posture illustrated in FIG.32B and the posture illustrated in FIG. 32C may be accomplished byincreasing the pressure in the lower chamber to a pressure level greaterthan the pressure level provided by the lower chamber in FIG. 32B butless than the pressure level provided by the lower chamber in FIG. 32A.In another embodiment, a variety of comfort settings for both firmnessand posture may also be accomplished by simultaneous pressuremodification to both upper and lower chambers.

In accordance with one embodiment, the control device 2204 illustratedin FIG. 22 can be employed with a multi-layer inflatable device, e.g.,an inflatable device that includes an upper inflatable fluid chamber anda lower inflatable fluid chamber. That is, the control device 2204 canbe employed to control a pressure/inflation level/firmness in each of anupper chamber and a lower chamber and a plurality of upper and lowerchambers (for example, as illustrated in FIG. 29). Accordingly, thecontrol device 2204 can be employed to vary a posture setting of theinflatable device through a plurality of posture settings.

In one embodiment, the selection of control of the upper layer and thecontrol of the lower layer is made by a particular sequence ofoperations f the control elements, e.g., a sequence or series of a tap,a plurality of taps, a press and hold operation, any one of thepreceding or any combination of the preceding. In a version of thisembodiment, the control element 2262C is triple tapped to toggle betweenpressure/firmness control of the upper layer and pressure/firmnesscontrol of the lower layer. Further, in various embodiments, a color ofthe light source (e.g., the light source 2252) is different when thecontrol device is in a first mode in which adjustments may be made tothe upper chamber (during which the light source appears as a firstcolor) and the color of the light source when the control device is in asecond mode in which adjustments may be made to the lower chamber(during which the light source appears as a second color).

In accordance with one embodiment, firmness control for a pair of upperand lower chambers may be accomplished using the control device 2204 asfollows: 1) the control element 2262B is tapped once to increase thefirmness in the lower chamber and is tapped again to stop the increase;2) the control element 2262B is tapped twice to increase the firmness inboth the lower chamber and the upper chamber; 3) the control element2262D is tapped once to incrementally decrease the firmness of the lowerchamber to a “semi-soft” level; 4) the control element 2262D is tappedtwice to incrementally decrease the firmness in the lower chamber to a“soft” level; 4) the control element 2262E is tapped once toincrementally increase the firmness in the lower chamber to a“semi-firm” level; 5) the control element 2262E is tapped twice toincrementally increase firmness in the lower chamber to a “firm” level;6) the control element 2262C is tapped once to decrease the firmness inthe lower chamber and is tapped again to stop the decrease; and 7) thecontrol element 2262C is tapped twice to decrease the firmness in boththe lower chamber and the upper chamber.

The operations identified in the immediately preceding description arenot required to be associated with the specific control elementsdescribed above. Instead, the operations may be associated withdifferent ones of the control elements and any set of associations maybe employed provided that the user is made aware of the associations.

Further, the control device may simply provide the user with a pluralityof posture settings. The various posture settings may be identified bynumber, by descriptor or both. For example, the posture settings mayinclude a “seated” posture setting, a “partially reclined” posturesetting or a “fully reclined” setting. Accordingly, the control devicemay employ the preceding descriptor, the preceding descriptors adjacenta series of associated indicating lights or some other combination ofindicia concerning the available posture settings and/or the currentposture setting of the inflatable device. In an alternate embodiment, auser may select any of a plurality of posture settings with a controldevice that does not include any indicia.

Also, in various embodiments, a user need only select a particularposture setting using a control device. Once the selection is made, thepressure controller responds to the selection by making any necessarychanges to the inflation levels in either or both of the upper chamberand the lower chamber to achieve the requested setting. That is, theuser can reach the selected posture without knowing the changes that arebeing made in the inflation of the chambers.

Embodiments of the control devices and pressure controllers describedherein may be employed with temporary-bedding (i.e.,occasional-bedding). That is, embodiments of the control devices andpressure controllers described herein may be employed with inflatablebedding that is stored in a deflated (e.g., collapsed) or partiallydeflated state when not in use.

The term fluid as used herein describes any material such as a gas(e.g., air), a liquid (e.g., water), or a gel that can be employed toinflate a fluid impermeable bladder.

As described above, the control devices described above may include oneor more indicating lights for example LEDs. In some embodiments, theindicating lights can be employed to communicate a variety ofinformation concerning the status of the inflatable device (e.g., theinflatable device 2840) and the pressure controller (e.g., pressurecontroller 206) to a user who, as a result, may more easily control theinflation level of the inflatable device. That is, indicating lights maybe employed to provide information in addition to the power on/offindication to, for example, provide the user with feedback concerningthe current pressure of the inflatable device and the operating state ofthe pressure controller. Referring now to FIGS. 33A-B, a state diagram3310 concerning operation of a control device, and associated inflatabledevice and pressure controller is illustrated in accordance with oneembodiment. In the following description, the state diagram 3310 isdescribed with reference to an embodiment of the control device 2840illustrated in FIGS. 28A-B. However, the state diagram 3310 can beemployed with other embodiments and with other control devices.

According to one embodiment, the control device 2840 provides a userinterface which includes the plurality of indicating lights 2844 whichprovide indicia that corresponds to a range of pressure levels in whichthe inflatable device (for example, the inflatable bladder of theinflatable device) is employed by the user. Further, each of theplurality of indicating lights 2844 is associated with a pressure levelof the inflatable device. Accordingly, the indicating light 2844C can beassociated with the minimum pressure level within the range, theindicating light 2844A can be associated with the maximum pressure levelwithin the range and the remaining indicating lights can be associatedwith a series of pressure levels between the minimum and the maximum.Further, the plurality of indicating lights can provide a fixed seriesof steps where, for example, the difference in the pressure levelbetween any two adjacent steps (as represented by two adjacentindicating lights) is the same throughout the range. Alternatively, thedifference in the pressure level between any two adjacent steps can bedifferent.

As illustrated in FIG. 28A, in some embodiments, the plurality ofindicating lights 2844 provides a constant display of indiciacorresponding to a range of pressure levels in which the inflatablebladder is employed by the user. For example, a location of each of theindicating lights 2844 is always visible in the user interface providedat the face of the control unit 2840 regardless of whether any of theplurality of indicating lights is on. The plurality of indicating lightscan be provided by any type of illuminating element includingincandescent elements, LEDs, or any other device that can be operated toprovide light in a spectrum visible to the user. Further, although FIG.28A illustrates a plurality of indicating lights 2844, the indicia maybe provided in any of a variety of types of forms that allow the indiciato provide an indication to the user that can vary between at least twostates. For example, an illuminating element can be in a first statewhere it is on, a second state where it is off, a third state where itis dimmed, and various other states in which it periodically changes inintensity. Accordingly, in some embodiments, any device that provides anindicia that can change between a first state and at least a secondstate can be employed. As described in greater detail below, thechanging state of the indicia can be employed to provide a user with anindication of a wide variety of operating states of the inflatabledevice.

The term “constantly displayed” when referring to a display of one ormore of the indicia herein refers to a display of the indicia in mannersuch that the indicia is effectively always present (for example, in auser interface of the control unit 2840) when the control unit is viewedby the user. In some embodiments, a constant display results in thecontinuous visible-presence of the indicia. In other embodiments, theterm “constantly displayed” refers to a substantially continuousvisible-presence of the indicia. For example, such an embodiment can beprovided where the indicia is presented in an electronic display inwhich the indicia “blinks” on and off at a frequency that is rapidenough that the indicia is effectively always present. According to oneembodiment, an interval in which the indicia is not present in thedisplay is no greater than one second. The interval time can vary inother embodiments. In general, the interval time should allow the userto substantially immediately view the indicia at a glance when thecontrol device 2840 is viewed by the user. Further, it should beapparent that the preceding embodiments can allow a user to observe achanging state of the indicia, for example, by providing an interval of“on-time” which is sufficient to display a current state of the indiciato the user.

In some embodiments, the range of pressure levels in which theinflatable bladder is employed by the user is pre-established at thetime of manufacture or distribution to retailers (or users) the level ofinflation associated with the plurality of indicating lights 2844 ispre-established. According to other embodiments, one end of the range(either the minimum inflation level or the maximum inflation level) isestablished as the level of inflation at which a bladder-fillingoperation is stopped by the user. According to these embodiments, theplurality of indicating lights are associated with a fixed series ofsteps (where the change provided by each step may or may not equal oneanother) corresponding to levels of inflation whose values (for example,pressure values) are not determined until the bladder-filling operationis stopped. Further, the pressure level need not be set as the minimumor the maximum level of inflation, but instead may be a level ofinflation associated with any one of the plurality of indicating lights.The pressure level associated with each of the remaining indicatinglights, respectively, among the plurality of indicating lights can thenbe based off the pressure level associated with the indicating lightcorresponding the stop point of the bladder-filling operation.

Although the following description includes reference to an “auto-fill”operation, the approach can be employed with any auto-inflationoperation. That is, an auto-fill operation is a type of auto-inflationoperation. For example, the pressure level at which the auto-inflationoperation is completed may result in a full bladder. Alternatively, theauto-inflation operation may be stopped at a pressure level which isless than “full” level of fluid in the bladder, for example, whetherstopped automatically or by the user. Further, an auto-inflationoperation may be interrupted by a user and then restarted from thisintermediate stop-point. In some embodiments, the auto-inflationoperation is completed based on a pre-set amount of time. According toone embodiment, the auto-inflation can be stopped by the user whenpartially completed (e.g., before reaching a pre-set stop point) suchthat the pressure level selected by the user becomes the pressure levelfrom which the range of pressure levels in which the inflatable bladderis employed is established.

According to some embodiments, the range of pressure levels in which theinflatable bladder is employed is established without employing anypressure sensing. For example, a relative difference between each of thepressures associated with the plurality of indicating lights can beestablished in advance. The actual pressure from which the range ofpressure levels in which the inflatable bladder is employed isestablished when the auto-inflation operation is complete (whether theresult of an auto-stop or a user-selected stop). Then, each of theabsolute pressure values corresponding to the plurality of indicia,respectively, are based off the pressure level at completion of theauto-inflation operation. The preceding approach can allow a useremploying the inflatable device to establish the pressures based on atactile feel, and further, without the use of any pressure sensors,pressure measurements or determinations of an absolute pressure value.

In accordance with some embodiments, a numerical magnitude of thepressure level associated with each of the plurality of indicia,respectively, is not provided. For example, is not provided by thecontrol device 2840.

At act 3312 power is turned on. According to one embodiment, each of theplurality of indicating lights 2844 blinks brightly three times whenpower to the pressure controller is first turned on. Thereafter, at act3314, in a “power-on idle” mode, each of the plurality of indicatinglights 2844 dim so long as the control elements of the control deviceremain inactive. According to one embodiment, the plurality ofindicating lights dim to a level referred to as a “nightlite” level thatis bright enough to be easily viewed in the dark but dim enough to notdisturb the rest/sleep of the user of the inflatable device.

At acts 3316 and 3317, the user adjusts a pressure level of theinflatable device. At act 3316, the user employs a control element(e.g., the control element 2842B) to decrease the pressure level by, ofexample, pressing and holding the control element. In one embodiment, avalve is opened in the pressure controller to deflate the inflatabledevice. In a further embodiment, the valve is opened and the pump isturned on to draw fluid from the inflatable device, referred to as a“power deflate” operation. According to one embodiment, the indicatinglight 2844C blinks slowly to provide a visual indication to a user thatthe pressure controller is operating in a power deflate mode ofoperation. The control device and pressure controller (e.g., thepressure controller 206) returns to a power-on idle mode thereafter.

At act 3317, the user employs the control element 2842A to increase thepressure level within the bladder of the inflatable device. According toone embodiment, the control element is activated (pressed and held) for1.5 seconds or less to add a small amount of fluid to the bladder, thatis, to incrementally add fluid to the bladder. In one embodiment, duringthe relatively brief period during which the control element isactivated the indicating light 2844A blinks rapidly and the remainingindicating lights dim. The control device returns to a power-on idlemode thereafter. Alternatively, where the control element iscontinuously activated (for example, pressed and held) for greater than1.5 seconds the pressure controller begins an autofill operation at act3318. According to one embodiment, the same result can be achieved ifthe control element is activated (pressed), then deactivated (released),and then activated (pressed) again within a 1.5 second period. In oneembodiment, the autofill operation of the pressure controller isindicated when the indicating light 2844 blinks slowly and the remainingindicating lights dim.

During the autofill operation, the pump operates to inflate theinflatable device. For example, from an empty or partially inflatedlevel to a value that According to one embodiment, the autofilloperation operates to inflate the bladder from a substantially deflatedcondition. In one embodiment, the pressure controller operates toincrease the pressure level of the inflatable device (fills the bladder)for a predetermined amount of time when operating in an autofill mode(for example, five minutes). That is, a desired operating pressure canbe achieved without the need for feedback from a pressure sensor (or anypressure measurement). Instead, the pressure controller can beconfigured to operate for a known period of time and at a knowninflation rate to achieve a desired pressure. Further, the rate ofinflation may also be unknown provided that the change of pressurecaused by operation of the pump for the pre-determined amount of time isknown. At act 3322, the pressure controller and control device change toan operating idle state upon completion of the autofill operation.

As described above concerning the control device 2840, the plurality ofindicating lights can include a first indicating light corresponding toa minimum inflation level (light 2844C) and a second indicating lightcorresponding to a maximum level of inflation (light 2844A). Inaccordance with one embodiment, when the pressure of the inflatabledevice is at least as great as a minimum level of inflation, theindicating light corresponding to the current pressure is illuminated.At act 3324, the indicating light corresponding to the current pressureremains illuminated once the control element is released for 1.25seconds, for example, when the user has found the target level ofinflation that they desire. That is, once the pressure in the inflatabledevice is between the minimum and maximum pressures, changes in pressurewithin the range may result in a first indicating light turning off anda second indicating light turning on. Thus, act 3324, represents a pointin time at which the user has located a target level of inflation andreleased the control elements of the control device. The then-currentindicating light remains on. Further, the inflation and deflation of theinflatable device (as the inflate or deflate control element isactivated) can cause the indicating light to shift upward or downward,respectively.

In accordance with some embodiments, the control device can be employedto allow the user to further adjust the level of inflation. For example,a “short autofill” operation may be initiated when with a pressurebetween the minimum and the maximum pressures (corresponding to theindicating lights 2844C and 2844A, respectively) is established. At act3326, the pressure is greater than or equal to the minimum pressure witha control element activated to further increase the inflation level. Inone embodiment, the pressure control is waiting to detect a shortautofill operation at act 3326 and the indicating light 2244A blinksrapidly to alert the user. According to one embodiment, the state of thepressure controller returns to act 3320 if the control element (controlelement 2842A) for inflation is activated for a period less than 1.5seconds and is either not reactivated during the same period or thedeflate control (control element 2842B) is selected during the same 1.5second period.

Alternatively, the state of pressure controller moves to act 3328 if thecontrol element (control element 2842A) for inflation is continuouslyactivated for the 1.5 second period or is activated and then reactivatedand held until the completion of the 1.5 second period. According to oneembodiment, the short autofill operates without the need for the user tocontinue to activate the control element (that is, the user need notcontinue to hold the control element 2842A). In one embodiment, however,the state of the pressure controller moves to act 3320 if during theshort autofill operation, either of the control elements 2842A or 2842Bis activated (depressed). Otherwise, once started, the short autofilloperation continues for a predetermined amount of time, for example, oneminute. According to one embodiment, the pressure established at thecompletion of the short autofill operation is the maximum pressure whichcorresponds to the pressure associated with the indicating light 2844A.According to one embodiment, the indicating light 2844A blinks rapidlyat act 3326 and blinks slowly at act 3328 during the short autofilloperation.

In a further embodiment, the pressure controller can also operate in anauto-empty mode. For example, at act 3330, detection of the auto-emptymode is initiated when the pressure in the inflatable device isdecreased to a level less than the minimum pressure (corresponding tothe lowest pressure at which one of the plurality of indicating lightsilluminates, as described above). According to one embodiment, the stateof the pressure controller returns to act 3320 if the control element(control element 2842B) for deflation is activated for a period lessthan 1.5 seconds and is either not reactivated during the same period orthe inflate control (control element 2842A) is selected during the same1.5 second period.

Alternatively, the state of pressure controller moves to act 3332 if thecontrol element (control element 2842B) for deflation is continuouslyactivated for the 1.5 second period or is activated and then reactivatedand held until the completion of the 1.5 second period. According to oneembodiment, the auto-empty operates without the need for the user tocontinue to activate the control element (that is, the user need notcontinue to hold the control element 2842B). In one embodiment, however,the state of the pressure controller moves to act 3320 if during theauto-empty operation, either of the control elements 2842A or 2842B isactivated (depressed). Otherwise, once started, the auto-empty operationcontinues for a predetermined amount of time, for example, three and ahalf minutes. According to one embodiment, the pressure controller andcontrol device return to the power-on idle mode at act 3314 followingthe completion of the auto-empty mode. According to one embodiment, theindicating light 2844C blinks rapidly at act 3330 and blinks slowly atact 3332 during the auto-empty operation.

In accordance with one embodiment, the control device 2840 and thepressure controller 206 operate to allow the user to set the pressure inthe inflatable device to the pressures corresponding to each of theplurality of indicating lights. For example, embodiments allow a user toactivate a control element momentarily to adjust the level of inflationto a known level. That is, a selected target pressure (associated withone of the plurality of indicating lights) may be reached when the userat the user activates the control element momentarily. For example, atact 3334, the current indicating light does not correspond to the userstarget pressure following the release of the control elements. In oneembodiment, the target indicating light is brightly illuminated and theother indicating lights are dim. At act 3334 the pressure controllerdetermines the amount of operating time (for example, how long the valvemust remain open for deflate or how long the pump must remain on forinflate) required to reach the selected target value. At act 3336, thepressure controller operates to achieve the target pressure. In oneembodiment, the target pressure is determined solely by the amount ofoperating time, that is, the target pressure is not reached based onfeedback from a pressure sensor. Following act 3336, the pressurecontroller returns to act 3320. Further, operation to achieve the targetpressure may not be complete where the user activates either of thecontrol elements (2842A or 2842B—inflate and deflate, respectively).

The preceding embodiments described with reference to the control device2840 and the state diagram 3310 can be employed with any of the pressurecontrollers (i.e., fluid controllers) described herein. Accordingly, insome embodiments the fluid controller includes a processor configured toemploy the current pressure level and the pressure level selected by theuser to determine the operating time of the fluid controller. In afurther embodiment, the fluid controller includes a memory coupled tothe processor, where the memory includes a lookup table concerning aplurality of time intervals for operation of the fluid controller toreach each of the levels of pressure associated with the plurality ofindicia.

Having thus described several aspects of at least one embodiment of thisinvention, it is to be appreciated various alterations, modifications,and improvements will readily occur to those skilled in the art. Suchalterations, modifications, and improvements are intended to be part ofthis disclosure, and are intended to be within the spirit and scope ofthe invention. Accordingly, the foregoing description and drawings areby way of example only.

What is claimed is:
 1. A method of employing a user interface to adjusta pressurization of an inflatable bladder using a fluid controller, themethod comprising acts of: displaying in the user interface a pluralityof indicia corresponding to a range of pressure levels in which theinflatable bladder is employed by a user, wherein each of the pluralityof indicia is associated with a level of pressure of the inflatablebladder, respectively; adjusting the pressurization of the inflatablebladder, in response to a user input at the user interface, to apressure level selected by the user based on a current pressure level ofthe inflatable bladder, the pressure level selected by the user and anoperating time of the fluid controller, without performing any pressuresensing to determine a pressure level in the inflatable bladder; andassociating a first indicia included in the plurality of indicia withthe current pressure level and a second indicia included in theplurality of indicia with the pressure level selected by the user. 2.The method of claim 1, further comprising an act of determining thepressure level of the inflatable bladder based on a pressure levelachieved when the inflatable bladder is filled in a pre-setauto-inflation operation, and one of the operating time of the fluidcontroller to increase the pressurization subsequent to a completion ofthe auto-inflation operation and the operating time of the fluidcontroller to decrease the pressurization of the inflatable bladdersubsequent to the auto-inflation operation.
 3. The method of claim 1,further comprising an act of activating the first indicia to indicatethe current pressure level of the inflatable bladder prior to the act ofadjusting.
 4. The method of claim 3 wherein the method further comprisesan act of illuminating a lamp to activate the first indicia.
 5. Themethod of claim 1, wherein the user interface is included in a handhelddevice in electrical communication with the fluid controller, whereinthe handheld device includes a control element configured to receive theuser input, and wherein the method further comprises an act of receivingthe user input with the control element to establish the pressure levelselected by the user.
 6. The method of claim 1, further comprising anact of determining the current pressure level based on a known pressurelevel provided by a pre-set auto-inflation operation.
 7. The method ofclaim 6, further comprising an act of reaching the current pressurelevel based at least partly on an elapsed time of operation of a pumpincluded in the fluid controller.
 8. The method of claim 6, furthercomprising an act of performing a pre-set auto-inflation operation inresponse to any of a continuous selection of a control element includedin the user interface for a predetermined minimum amount of time and arepeated selection of the control element occurring within apredetermined maximum amount of time.
 9. The method of claim 8, whereinthe predetermined minimum amount of time equals the predeterminedmaximum amount of time.
 10. The method of claim 1, further comprising anact of exhausting substantially all of the fluid from the inflatablebladder in response to a continuous selection of a control elementincluded in the user interface for a predetermined minimum amount oftime.
 11. The method of claim 10, wherein the exhausting substantiallyall of the fluid from the inflatable bladder is based on the currentpressure level of the inflatable bladder and an operating time of thefluid controller.
 12. The method of claim 1, further comprising an actof activating the second indicia to indicate the pressure level selectedby the user.
 13. The method of claim 12, further comprising an act ofdetermining a time interval for operation of a fluid moving deviceincluded in the fluid controller to reach the pressure level selected bythe user from the current pressure level.
 14. The method of claim 1,further comprising an act of disposing the fluid controller within aprofile of an inflatable mattress.
 15. The method of claim 1, furthercomprising an act of removing substantially all of the fluid from theinflatable bladder based on the current pressure level of the inflatablebladder and an operating time of the fluid controller.
 16. A method ofemploying a user interface to adjust a pressurization of an inflatablebladder using a fluid controller, the method comprising acts of:displaying in the user interface a plurality of indicia corresponding toa range of pressure levels in which the inflatable bladder is employedby a user, wherein each of the plurality of indicia is associated with alevel of pressure of the inflatable bladder, respectively; adjusting thepressurization of the inflatable bladder, in response to a user input atthe user interface, to a pressure level selected by the user based on acurrent pressure level of the inflatable bladder, the pressure levelselected by the user and an operating time of the fluid controller;associating a first indicia included in the plurality of indicia withthe current pressure level and a second indicia included in theplurality of indicia with the pressure level selected by the user; anddetermining the pressure level based on a pressure level achieved whenthe inflatable bladder is filled in a pre-set auto-inflation operation,and at least one of the operating time of the fluid controller toincrease the pressurization subsequent to a completion of theauto-inflation operation and the operating time of the fluid controllerto decrease the pressurization of the inflatable bladder subsequent tothe auto-inflation operation.
 17. The method of claim 16, furthercomprising an act of adjusting the pressurization without employingpressure sensing.
 18. The method of claim 16, further comprising actsof: activating the first indicia to indicate the current pressure levelof the inflatable bladder prior to the act of adjusting; and activatingthe second indicia to indicate the pressure level selected by the user.19. The method of claim 18, further comprising an act of determining atime interval for operation of a fluid moving device included in thefluid controller to reach the pressure level selected by the user fromthe current pressure level.
 20. A system for controlling apressurization of an inflatable bladder, the system comprising: theinflatable bladder; a fluid controller coupled to the inflatable bladderand configured to add fluid to and remove fluid from the inflatablebladder; and a control unit configured to provide information used bythe fluid controller to adjust the pressurization of the inflatablebladder, the control unit including a user interface configured todisplay a plurality of indicia corresponding to a range of pressurelevels in which the inflatable bladder is employed by a user, whereineach of the plurality of indicia is associated with a different level ofpressure of the inflatable bladder, respectively, wherein the fluidcontroller is configured to adjust the pressurization, in response to auser input at the user interface, to a pressure level selected by theuser based on a current pressure level of the inflatable bladder, thepressure level selected by the user and an operating time of the fluidcontroller, wherein the fluid controller is configured to determine thecurrent pressure level based on a level of pressure reached when theinflatable bladder is filled in an auto-inflation operation, and atleast one of the operating time of the fluid controller to increase thepressurization subsequent to a completion of the auto-inflationoperation and the operating time of the fluid controller to decrease thepressurization of the inflatable bladder subsequent to theauto-inflation operation, and wherein a first indicia included in theplurality of indicia is associated with the current pressure level and asecond indicia included in the plurality of indicia is associated withthe pressure level selected by the user.
 21. The system of claim 20,wherein the control unit is configured to activate the first indicia toindicate the current pressure level, to activate the second indicia toindicate that the pressure level selected by the user when the pressurelevel is selected, and to deactivate the first indicia when the pressurelevel selected by the user is reached.
 22. The system of claim 20,wherein the control unit is configured to wirelessly communicateinformation concerning the pressure level selected by the user to thefluid controller.
 23. The system of claim 20, wherein the fluidcontroller includes a processor configured to employ the currentpressure level and the pressure level selected by the user to determinethe operating time of the fluid controller, and wherein the fluidcontroller includes a memory coupled to the processor, the memoryincluding a lookup table concerning a plurality of time intervals foroperation of the fluid controller to reach each of the levels ofpressure associated with the plurality of indicia.
 24. The system ofclaim 20, wherein the fluid controller includes a fluid moving device;at least one valve fluidly coupled to the fluid moving device andconfigured to selectively isolate the fluid moving device from theinflatable bladder; and at least one electromechanical device configuredto operate the at least one valve during at least one of inflation anddeflation of the inflatable bladder, wherein the fluid controller isconfigured to activate the at least one electromechanical device incombination with the fluid moving device to add fluid to the inflatablebladder.
 25. The system of claim 20, wherein the system is configured toadjust the pressurization without employing a pressure sensing device.